Surebonder 44403 #4 Staples, Heavy Duty, 1/2-Inch Leg Length, .417-Inch Narrow Crown Staples, 5000 Staples Per Box. For use with Surebonder staplers: 5600, 5602, 5685, 5900, 5700, 5800, 5850 and 9600. Arrow staplers: T50, T55, ET50, ETN50, ETF50, ETF50P, HT50A/50P. Master Mechanic staplers: 5600MM, 5700MM, 5800MM, M5000, M5500 & M5100. Black & Decker staplers: 2000E, 3000E, 5700P & 6000E. Craftsman staplers: 68447. Stanley staplers: TR60, TR85, TR100, TR200, TRE100, TRE200, PHT150, 69.500, 69.502, 69.550. Swingline/Powerfast staplers: 10401. Unifix staplers: 0038, 10040, & 10070. ANSI Z87.1 Always wear safety glasses.