Since 1950, The Arrow HT50 Professional Hammer Tacker is the trusted, high-quality tool for craftsman and professionals. It is constructed with chromed steel housing and all steel working parts. Best of all, it is ideal for attaching insulation, roofing felt, carpet padding and much more.. Crown Width: 3/8 in.. Hand Tool Type: Staples. Maximum staple size (in.): .5. Returnable: 90-Day. Staple Type: T50. Tools Product Type: Hand Tool. Assembled Depth (in.): 1.5 in. Assembled Height (in.): 3.25 in. Assembled Width (in.): 1.125 in. Handle Length (in.): 6. Maximum staple size (in.): .5. Staple Type: T50. Crown Width: 3/8 in.. Hand Tool Type: Staples. Tools Product Type: Hand Tool