Surebonder 88038 T50 Type Stainless Steel Number-4-Number-55038 Heavy Duty Staple, 3/8-Inch Length Stainless Steel .417" Crown, 3/8" Leg Length Fits Surebonder: 5690 Triggerfire, 5600 HD 3 in 1 Stapler, 5685 HD Pro/Contractor Gun, 5800 HD Hammer Tacker, 9600A Pneumatic Stapler ArrowT50, StanleyTR110 TR150HL Powerfast(Swingline)10401,31690,31890, Ace Hdwe2014413, Craftsman,68517,68492,68515, Black & Decker5700 Applications: insulation, weather stripping, wire mesh, roofing paper, etc