This GP Wise Grip, designed for Gerry Pagano, bass trombonist with the Saint Louis Symphony, is basically a modification of the large bore grip (item 128044). The GP grip extends about a quarter inch (6.4mm) further down the cork barrel, all the way to the trim ring. It is a bit rounder, and has smoother contours on the barrel side. It was sized specifically for Gerry's Edwards bass trombone but will fit other Edwards and Getzens, as well as other maker's models with 1-7/16" (36.5mm) clearance fr...