10,000 total heavy-duty, galvanized steel professional staples made in the USA Divergent point twists the staple slightly as it enters the material. 3/8" crown width, .050 wire For use in interior and exterior jobs, such as roofing felt, house wrap, insulation, weather-stripping, wire mesh and carpeting Fits the following Arrow staple and/or nail guns: T50, T50X, T50HS, 5700, T50R.E.D., T50PBN, HT50, HT55, HTX50, HT55BL, T50ACD, T50DCD, T50AC, PT50. Also works great with products from other brands like Powershot, Craftsman, Black & Decker, Stanley, & Ace