Surebonder, #6 Heavy Duty 1/4" Staple, 1000 Staples Per Box, For Use With Duo-Fast Models CT850, CT859, XE5018, CT50 & HT550 Staple Guns.Ace Models 22084, 22087 & 27175, Black & Decker Models 9700, 9701, 9713 &9715, Craftsman Models 6846, 6843, 68423, 68643, 6844, 68447, 68477 & 68471.