Selling Greg Black large shank 3.5 rim(in between 3 and 4 rim size, very comfortable), medium weight, more efficient #1 backbore that comes standard on the NY and W models, as opposed to the very open stock #3 backbore that usually comes on the standard series. This mouthpiece performs like a scaled down NY 3, if the NY 3 feels too wide to you this is a great option. Excellent condition, minor insertion marks are only flaw. $175 shipped.