Dimensions of our Surebonder 11012 #6 Heavy Duty, DuoFast Type Staples are 1/2-Inch leg length and .485-Inch wide crown. 1000 Staples per box. Applications but not limited to Canvas, Roofing Paper, Carpeting, Felt Stripping, etc. Surebonder supplies high quality fastening products. Our staples will meet all of your stapling needs. The 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.