Ace JT-21 Staple Pack is used for roofing felt, house wrap, insulation, weather stripping, wire mesh, carpeting, canvas, roofing paper, vapor barrier and more Offer optimum performance in any standard stapler Finely honed chisel points for maximum penetration Perfect performance without frustrating jams or interruptions Universal fit with Dewalt, Bostitch, Stanley, Surebonder and other brands