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Complete Gr Catalogue

 

Models  Cup Volume  Cup Volume Cup Diameter r2 r4 Rim
.600" - .620" Description Cubic Inches Inch mm Fraction @.032" Contour Bite Alpha Angle
Groovin' High 2 Very Small 0.051 0.6 15.24 38.4/64 0.613 Medium Flat Very Soft Super High
Groovin' High 2* Very Small 0.051 0.6 15.24 38.4/64 0.613 Medium Flat Very Soft Super High
Groovin' High 3* Very Small 0.0514 0.6 15.24 38.4/64 0.6154 Medium Flat Softer than 2* Super High
Groovin' High 4* Very Small 0.0518 0.6 15.24 38.4/64 0.613 Medium Flat Softer than 3* Super High
.620" - .630"                  
E62S Small .063 0.62 15.75 39.7/64 .635 Med. Flat - Wide Medium Soft Medium High
E62MS Medium Small .067 0.62 15.75 39.7/64 .635 Med. Flat - Wide Medium Soft Medium High
E62M Medium .0695 0.62 15.75 39.7/64 .635 Med. Flat - Wide Medium Soft Medium High
62S Small .062 0.62 15.75 39.7/64 .631 Medium Medium Medium High
62MS Medium Small .066 0.62 15.75 39.7/64 .631 Medium Medium Medium High
62M Medium .068 0.62 15.75 39.7/64 .631 Medium Medium Medium High
Primal 62 Medium Small .0672 0.62 15.75 39.7/64 .631 Medium Medium Medium High
Primal 62Z Small 0.0637 0.62 15.75 39.7/64 .631 Medium Medium Medium High
62Z* Small 0.0583 0.62 15.75 39.7/64 .629 Flat  Med. - Wide Medium High
62Z** Small 0.0588 0.62 15.75 39.7/64 .633 Flat  Med. - Wide Soft High
CF Signature Z Medium Small 0.0617 0.625 15.86 40/64 0.656 Semi-Flat, Wide Soft Very High
CF Signature Jazz Medium Small 0.0666 0.625 15.86 40/64 0.656 Semi-Flat, Wide Soft Very High
NB GP3 Very Small 0.0576 0.627 15.9 40/64 0.64 Semi Flat - Wide Medium Medium
NB 63 4* Medium Small 0.0649 0.627 15.9 40/64 0.64 Semi Flat - Wide Medium High
NB 63 5* Medium Small 0.0651 0.627 15.9 40/64 0.64 Semi Flat - Wide Medium High
.630" - .640"                  
NB 63 1* Very Small 0.0558 0.63 16 40/64 0.643 Medium Medium Soft Super High
NB 63 2* Very Small 0.0568 0.63 16 40/64 0.643 Medium Medium Soft Very High
NB 63 3* Very Small 0.0577 0.63 16 40/64 0.643 Medium Medium Soft High
63S Small .064 0.63 16 40/64 0.641 Medium Medium Medium High
63MS Medium Small .068 0.63 16 40/64 0.641 Medium Medium Medium High
63M Medium .071 0.63 16 40/64 0.641 Medium Medium Medium High
63Z* Small .0604 0.63 16 40/64 0.639 Flat  Med. - Wide Medium High
63Z** Small .061 0.63 16 40/64 0.643 Flat  Med. - Wide Soft High
63.5Z Small .0614 0.635 16.13 40.6/64 0.644 Flat-Wide Medium Sharp High
.640" - .650"                  
64ES Small .059 0.64 16.26 41/64 0.651 Medium Medium High
64E-5 Small .0658 0.641 16.26 41/64 0.656 Semi - Flat Medium Sharp Medium
64S Small .067 0.64 16.26 41/64 0.651 Medium Medium Medium High
NB 64 4* Medium Small 0.0677 0.64 16.26 41/64 0.651 Semi Flat - Wide Medium High
NB 64 5* Medium Small 0.0678 0.64 16.26 41/64 0.651 Semi Flat - Wide Medium High
64MS Medium Small .071 0.64 16.26 41/64 0.651 Medium Medium Medium High
64M Medium .074 0.64 16.26 41/64 0.651 Medium Medium Medium High
64Z* Small .0625 0.64 16.26 41/64 0.649 Flat Med. - Wide Medium High
64Z** Small 0.063 0.64 16.26 41/64 0.653 Flat Med. - Wide Soft High
64Z*W Small 0.0623 0.64 16.26 41/64 0.647 Flat Extra - Wide Medium Sharp High
64.7S Small 0.063 0.647 16.43 41.4/64 0.654 Semi Flat - Wide Medium Sharp High
64.7MS Small 0.066 0.647 16.43 41.4/64 0.654 Semi Flat - Wide Medium Sharp High
64.7M Medium Small 0.069 0.647 16.43 41.4/64 0.654 Semi Flat - Wide Medium Sharp High
.650" - .660"                  
E65S Small 0.07 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium High
E65MS Medium Small 0.074 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium High
E65M Medium 0.077 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium High
E65MX Medium Large 0.0823 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium
E65C* Medium Large 0.0814 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium High
E65C** Medium Large 0.0815 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium High
E65C Medium Large 0.0821 0.65 16.5 41.6/64 0.665 Med. Flat - Wide Medium Soft Medium High
CS 65S Very Small 0.064 0.65 16.5 41.6/64 0.657 Medium Medium Sharp High
CS 65 MS Small 0.069 0.65 16.5 41.6/64 0.657 Medium Medium Sharp High
65S Small 0.07 0.65 16.5 41.6/64 0.663 Medium Medium Medium High
65MS Medium Small 0.074 0.65 16.5 41.6/64 0.663 Medium Medium Medium High
65M Medium 0.077 0.65 16.5 41.6/64 0.663 Medium Medium Medium High
CS 65M Medium 0.0779 0.65 16.5 41.6/64 0.657 Medium Medium Sharp Medium High
65MX Medium Large 0.082 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65L Medium Large 0.084 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65LX Large 0.086 0.65 16.5 41.6/64 0.663 Medium Medium Low
65C* Medium Large 0.0806 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65C** Medium Large 0.0808 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65C Medium Large 0.0813 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65VC Medium Large 0.0835 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65Z* Small 0.0644 0.65 16.5 41.6/64 0.659 Flat Med. - Wide Medium High
65Z** Small 0.0649 0.65 16.5 41.6/64 0.663 Flat Med. - Wide Soft High
NB 65 4* Medium Small 0.0695 0.651 16.5 41.6/64 0.66 Semi Flat - Wide Medium High
Macaluso 65.6S Medium Small 0.0664 0.656 16.66 41.9/64 0.665 Semi Flat - Wide Medium Sharp Medium High
Butcher 65.6S Medium Small 0.0661 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
Butcher 65.6MS Medium Small 0.073 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
Butcher 65.6M Medium 0.076 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
Butcher 65.6 M2+ Medium 0.0784 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
Butcher 65.6C Medium Large 0.0846 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
3S Small 0.0708 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
NB 66 4* Medium Small 0.0728 0.66 16.76 42.2/64 0.671 Semi Flat - Wide Medium High
3MS Medium Small 0.0766 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
3M Medium 0.0806 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
3MX Medium Large 0.084 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
3HC* Medium Large 0.0836 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
3HC** Medium Large 0.0839 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
Haefner 3HC Med. Large C 0.0845 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
3VC Medium Large 0.0857 0.66 16.76 42/64 0.677 Semi Flat Medium Soft Medium
CS 66S Very Small 0.066 0.66 16.76 42/64 0.671 Medium Medium Sharp High
CS 66MS Small 0.072 0.66 16.76 42/64 0.671 Medium Medium Sharp High
66S Small 0.072 0.66 16.76 42/64 0.673 Medium Medium Medium High
66MS Medium Small 0.076 0.66 16.76 42/64 0.673 Medium Medium Medium High
66M Medium 0.079 0.66 16.76 42/64 0.673 Medium Medium Medium High
CS 66M Medium 0.0803 0.66 16.76 42/64 0.671 Medium Medium Sharp Medium High
66MX Medium Large 0.085 0.66 16.76 42/64 0.673 Medium Medium Medium
66L Medium Large 0.087 0.66 16.76 42/64 0.673 Medium Medium Medium
66LX Large 0.0884 0.66 16.76 42/64 0.673 Medium Medium Low
66CX Medium Large 0.0871 0.66 16.76 42/64 0.673 Medium Medium Low
66C* Medium Large 0.0831 0.66 16.76 42/64 0.673 Medium Medium Medium High
66C** Medium Large 0.0834 0.66 16.76 42/64 0.673 Medium Medium Medium High
66C Medium Large 0.08 0.66 16.76 42/64 0.673 Medium Medium Medium High
66VB Large Semi-V 0.0857 0.66 16.76 42/64 0.673 Medium Medium Medium
66VC Large Semi-V 0.0862 0.66 16.76 42/64 0.673 Medium Medium Medium
G66** Gary Radtke Medium Small 0.0718 0.66 16.76 42/64 0.673 Medium Wide Medium High
G66*** Gary Radtke Medium 0.0793 0.66 16.76 42/64 0.673 Medium Wide Medium Medium High
66Z* Small 0.664 0.66 16.76 42/64 0.669 Flat Med. - Wide Medium High
66Z** Small 0.0669 0.66 16.76 42/64 0.673 Flat Med. - Wide Soft High
Almeida 66.5MS Medium Small 0.0756 .665 16.89 42.56/64 0.685 Medium Round Soft Medium High
Almeida 66.5M Medium 0.084 .665 16.89 42.56/64 0.685 Medium Round Soft Medium
66.6M2*** Medium Large 0.0837 0.666 16.92 42.62/64 0.674 Semi-Flat Medium Sharp Medium
66.6M2** Medium Large 0.0855 0.666 16.92 42.62/64 0.674 Semi-Flat Medium Sharp Medium
1NC Large .0903 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
1NC* Large .09 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
1NMC Med. Large .0858 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
1NM Med. Large .0859 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
1NSV Medium .0775 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
1NSVL Large .0775 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
1NSP Medium Large .0766 0.668 16.97 42.75/64 0.675 Semi-flat Sharp Low
L66.9C Medium Large 0.0844 0.669 16.99 42.8/64 0.6774 Semi-Flat Medium Sharp Medium
L66.9B Medium Large 0.073 0.669 16.99 42.8/64 0.6774 Semi-Flat Medium Sharp Medium
.670" - .681"                  
CS 67S Very Small 0.0686 0.67 17.08 42.8/64 0.681 Medium Medium Sharp High
CS 67MS Small 0.0742 0.67 17.08 42.8/64 0.681 Medium Medium Sharp High
67S Small 0.073 0.67 17 43/64 0.681 Medium Medium Medium High
67MS Medium Small 0.077 0.67 17 43/64 0.681 Medium Medium Medium High
67M Medium 0.08 0.67 17 43/64 0.681 Medium Medium Medium High
CS 67M Medium 0.0825 0.67 17.08 42.8/64 0.681 Medium Medium Sharp Medium High
67M2 Medium 0.0827 0.67 17 43/64 0.681 Medium Medium Medium
67MX Medium Large 0.087 0.67 17 43/64 0.681 Medium Medium Medium
67L Medium Large 0.0886 0.67 17 43/64 0.681 Medium Medium Medium
67LX Large 0.0913 0.67 17 43/64 0.681 Medium Medium Low
67VB Large Semi-V 0.0877 0.67 17 43/64 0.681 Medium Medium Medium
67VC Large Semi-V 0.0882 0.67 17 43/64 0.681 Medium Medium Medium
67C* Medium Large 0.0855 0.67 17 43/64 0.681 Medium Medium Medium High
67C** Medium Large 0.0858 0.67 17 43/64 0.681 Medium Medium Medium High
67C Medium Large 0.0864 0.67 17 43/64 0.681 Medium Medium Medium High
67CX Large 0.0893 0.67 17 43/64 0.681 Medium Medium Low
67BX B Style Cup 0.0874 0.67 17 43/64 0.681 Medium Medium Medium
67C-T Large 0.0898 0.676 17.7 43.25/64 0.685 Medium Flat Medium Medium Low
67B-T Large 0.0895 0.676 17.7 43.25/64 0.685 Medium Flat Medium Medium Low
1HX Signature Large V 0.0871 0.671 17 43/64 0.674 Semi Flat Sharp Low
1HC Large C 0.0906 0.681 17.3 43.6/64 0.685 Semi Flat Medium Sharp Low
1HX-C Large C .0906 0.671 17 43/64 0.674 Semi Flat Sharp Low
1HX-L Medium .0798 0.671 17 43/64 0.674 Semi Flat Sharp Low
X27 Very Large 0.0961 0.677 17.2 43.3/64 0.683 Semi Flat Medium Sharp Low
X24 Very Large 0.0959 0.677 17.2 43.3/64 0.683 Semi Flat Medium Sharp Low
Zonshine Zony 1 Large 0.0962 0.679 17.25 43.5/64 0.696 Semi Flat Sharp Medium
Zonshine Zony 9C Large 0.09 0.679 17.25 43.5/64 0.696 Semi Flat Sharp Medium

 

GR Flugelhorn Mouthpieces

Models  Cup Volume  Cup Volume Cup Diameter r2 r4 Rim
Flugelhorn Description Cubic Inches Inch mm Fraction @.032" Contour Bite Alpha Angle
Groovin' FL Flugelhorn 0.0812 0.6 15.24 38.4/64 0.613 Medium Flat Very Soft High
Groovin' FD Open Flugel 0.0986 0.6 15.24 38.4/64 0.613 Medium Flat Very Soft Medium
E62FL Standard Flugel 0.099 0.62 15.75 39.7/64 0.635 Medium Flat - Wide Medium Soft Medium
E62FD Open Flugel 0.1084 0.62 15.75 39.7/64 0.635 Medium Flat - Wide Medium Soft Medium
62FL Standard Flugel 0.099 0.62 15.75 39.7/64 0.631 Medium Medium Medium
62FD Open Flugel 0.108 0.62 15.75 39.7/64 0.631 Medium Medium Medium
CF DWB Flugel Signature Deep Flugel 0.119 0.625 15.86 40/64 0.656 Semi-Flat, Wide Soft Medium
NB 64 4* FL Flugelhorn 0.1011 0.627 15.9 40/64 0.64 Semi Flat - Wide Medium Medium
63FL Standard Flugel 0.1015 0.63 16 40/64 0.641 Medium Medium Medium
63FD Open Flugel 0.111 0.63 16 40/64 0.641 Medium Medium Medium
NB 63 3* FL Flugelhorn 0.1019 0.63 16 40/64 0.643 Medium Medium Soft High
63.5FD Open Flugel 0.1114 0.635 16.13 40.6/64 0.644 Flat - Wide Medium Sharp Medium
64FL Standard Flugel 0.1039 0.64 16.26 41/64 0.651 Medium Medium Medium
64FD Open Flugel 0.1127 0.64 16.26 41/64 0.651 Medium Medium Medium
64.7FL Trudell Standard Flugel 0.1057 0.647 16.43 41.4/64 0.654 Semi Flat - Wide Medium Sharp Medium
E65FL Standard Flugel 0.1085 0.65 16.5 41.6/64 0.665 Medium Flat - Wide Medium Soft Medium
E65FD Open Flugel 0.1152 0.65 16.5 41.6/64 0.665 Medium Flat - Wide Medium Soft Medium
CS 65FL Flugelhorn 0.103 0.65 16.5 41.6/64 0.657 Medium Medium Sharp Medium High
65FL Standard Flugel 0.108 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65FD Open Flugel 0.1152 0.65 16.5 41.6/64 0.663 Medium Medium Medium
65.6FL Macaluso Standard Flugel 0.1083 0.656 16.66 41.9/64 0.665 Semi Flat - Wide Medium Sharp Medium
65.6FL Butcher Standard Flugel 0.108 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
65.6FD Butcher Open Flugel 0.1154 0.656 16.66 41.9/64 0.664 Medium Medium Sharp Medium
66FL Standard Flugel 0.11 0.66 16.76 42/64 0.673 Medium Medium Medium
66FD Open Flugel 0.117 0.66 16.76 42/64 0.673 Medium Medium Medium
G66FL Radtke Standard Flugel 0.11 0.66 16.76 42/64 0.673 Medium - Wide Medium Medium High
G66FD Radtke Open Flugel 0.117 0.66 16.76 42/64 0.673 Medium - Wide Medium Medium High
CS 66FL Flugelhorn 0.108 0.66 16.76 42/64 0.671 Medium Medium Sharp Medium High
3FL Standard Flugel 0.1096 0.66 16.76 42/64 0.673 Semi - Flat Medium Soft Medium
3FD Open Flugel 0.1167 0.66 16.76 42/64 0.673 Semi - Flat Medium Soft Medium
66.5FL Almeida Standard Flugel 0.1116 0.665 16.89 42.56/64 0.685 Medium Round Soft Medium
67FL Standard Flugel 0.1113 0.67 17 43/64 0.681 Medium Medium Medium
67FD Open Flugel 0.1185 0.67 17 43/64 0.681 Medium Medium Medium
CS 67FL Flugelhorn 0.1105 0.67 17.08 42.8/64 0.681 Medium Medium Sharp Medium High
1HX - FL Flugelhorn 0.119 0.671 17 43/64 0.674 Semi Flat Sharp Low

 

GR Piccolo Trumpet Mouthpieces

Models  Cup Volume  Cup Volume Cup Diameter r2 r4 Rim
60.5 Description Cubic Inches Inch mm Fraction @.032" Contour Bite Alpha Angle
60.5 P-S Small 0.0641 0.606 15.4 38.8/64 0.625 Medium Flat - Wide Medium Soft Medium
60.5 P-M Medium 0.0658 0.606 15.4 38.8/64 0.625 Medium Flat - Wide Medium Soft Medium
60.5 P Large Piccolo 0.0701 0.606 15.4 38.8/64 0.625 Medium Flat - Wide Medium Soft Medium
62                  
62 P-S Small 0.0658 0.62 15.75 39.7/64 0.64 Medium Flat - Wide Medium Soft Medium
62 P-M Medium 0.0688 0.62 15.75 39.7/64 0.64 Medium Flat - Wide Medium Soft Medium
62P Large Piccolo 0.0722 0.62 15.75 39.7/64 0.64 Medium Flat - Wide Medium Soft Medium
63                  
63 P-S Small 0.0679 0.63 16 40/64 0.651 Medium Flat - Wide Medium Soft Medium
63 P-M Medium 0.0713 0.63 16 40/64 0.651 Medium Flat - Wide Medium Soft Medium
63 P Large Piccolo 0.0752 0.63 16 40/64 0.651 Medium Flat - Wide Medium Soft Medium
64                  
64 P-S Small 0.0684 0.64 16.26 41/64 0.66 Medium Flat - Wide Medium Soft Medium
64 P-M Medium 0.0727 0.64 16.26 41/64 0.66 Medium Flat - Wide Medium Soft Medium
64 P Large Piccolo 0.0749 0.64 16.26 41/64 0.66 Medium Flat - Wide Medium Soft Medium
64.4 P Large Piccolo 0.075 0.644 16.26 41/64 0.657 Medium Medium Medium
7H*S Medium Small 0.0742 0.642 16.3 41/64 0.655 Semi Flat - Wide Medium Soft Medium
7H*P Medium 0.0774 0.642 16.3 41/64 0.655 Semi Flat - Wide Medium Soft Medium
7HES Medium Small 0.0742 0.642 16.3 41/64 0.655 Medium Medium Soft Medium
7HEP Medium 0.0774 0.642 16.3 41/64 0.655 Medium Medium Soft Medium
7HXS Medium Small 0.0742 0.642 16.3 41/64 0.655 Semi Flat Medium Soft Medium
7HXP Medium 0.0774 0.642 16.3 41/64 0.655 Semi Flat Medium Soft Medium
65                  
CS 65P Very Small 0.0644 0.65 16.5 41.6/64 0.657 Medium Medium Sharp Medium High
65 P-S Small 0.0732 0.65 16.53 41.67/64 0.669 Medium Flat - Wide Medium Soft Medium
65 P-M Medium 0.0758 0.65 16.53 41.67/64 0.669 Medium Flat - Wide Medium Soft Medium
65 HSZ Large Piccolo 0.0792 0.65 16.53 41.67/64 0.669 Medium Flat - Wide Medium Soft Medium
66                  
CS 66P Very Small 0.0672 0.66 16.76 42/64 0.671 Medium Medium Sharp Medium High
66 P-S Small 0.0751 0.664 16.86 42.5/64 0.683 Medium Flat - Wide Medium Soft Medium
66 PM-T Medium 0.0764 0.659 16.7 42.2/64 0.671 Medium Flat - Wide Medium Sharp Medium
66PM Medium 0.0776 0.664 16.86 42.5/64 0.683 Medium Flat - Wide Medium Soft Medium
66P Large Piccolo 0.0824 0.664 16.86 42.5/64 0.683 Medium Flat - Wide Medium Soft Medium

 

GR Trumpet Mouthpiece Comparison Chart

Comparisons are approximate and are to be used as a reference point only.

62 Series  10 1/2C
62Z Series 6A4a
Primal 62  10 1/2D
63 Series  40M
64 Series  7C, 41M
64Z Series 13A4a
64.7 Series 13A4
65 Series  7C/5C, 42M
Butcher 65.6  5C/3C
Macaluso 65.5 14A4
66Z Series 14A4a
3 Series 3C
66 Series 14,3C
 Almeida 66.5 2C
67 Series  1 1/2C, 43M