Compatible with all Spec Ops Staple Guns and Hammer Tackers, these heavy duty, *T50 style, galvanized staples, 1/2 inchare the perfect pairing to get any upholstery, carpentry or flooring job done in an efficient way. Manufactured with finely honed chisel points, these staples ensure maximum penetration and rapid drive for any project. These staples are also constructed from superior quality high carbon galvanized steel wire that lasts in any harsh weather conditions without rusting. *T50 is a registered trademark of Arrow Fastener company.