Surebonder 22516 #11 Power Crown Staples, Bostitch Type, 5/16-Inch Leg Length, .449-Inch Wide Crown, 1000 Staples Per Box. Surebonder supplies high quality fastening products. Surebonder staples will meet all of your stapling needs. Our staples are designed for use with Surebonder staple guns and many of the other top name brand staple guns. ANSI Z87.1 Always wear safety glasses.