1G & 1GS Cup Diameter: 29mm, 1.144" Bore: 'O', .316" Cup Depth:  "G" Deep, "GS" Slightly Shallower  Rim Width: Medium Thin Alternate Bore Available: .312"/#2 Please Note:Bass Trombone mouthpieces are available in four weights: Light, Regular, Medium, and Heavy.Alternative shanks are available and can be selected wi

1G & 1GS Cup Diameter: 29mm, 1.144 Bore: 'O', .316 Cup Depth:  G Deep, GS Slightly Shallower  Rim Width: Medium Thin Alternate Bore Available: .312/#2 Please Note:Bass Trombone mouthpieces are available in four weights: Light, Regular, Medium, and Heavy.Alternative shanks are available and can be selected with the ‘Shank Option’ drop down box. If a different shank is selected, the bore size and backbore will be adjusted accordingly for the right balance. “In the 30 years I’ve known Greg Black I can truly say that when it comes to making mouthpieces, he is a true artisan and craftsman. His work and attention to detail is of the highest level.  Greg is personable and genuine, and always takes care of his customers needs. That’s why I play his mouthpieces!” Jack SchatzNY Freelance Bass Trombone

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