Replace lost, broken, stripped or rounded off screws on Trijicon front night sights for Glock pistols. 3/16" hex head fits standard front sight wrenches used for most threaded Glock front sights. Use with a low to medium strength thread locking agent for a solidly mounted front sight that won't "shoot off." Fits Trijicon brand Tritium front sights for all Glock models. Mfg: Trijicon SPECS: Steel, matte, blue finish. 5 per pak. 2.5 mm x 0.5 mm thread, .090" long shank, 3⁄16" dia. hex head.