Bianchi Accumold Holster 7506 Black Belt Slide (Size 15A with Thumbsnap, Glock 20, 21, 29, 30, 36) Allows thumb break and front strap opening Adjust-A-Strap feature permits adjustment for different handguns Snaps/slides on 1.75" (45mm) belts Removable thumbstrap This featherlight slide holster snugs up to your body, close and comfortable. Firm action snaps on the two belt straps allow quick release without removing the belt. Thumb break release offers quick, easy access.