ARROW Heavy Duty Hammer Tacker. It is made of steel construction with high carbon steel working parts and has a chrome finish. It also features a non-slip grip handle and a narrow crown. It auto feeds and drives staples. It uses 1250PK T-50 1/4" TV #137-190, 5/16" TV #137-364, 3/8" TV #137-406 & 1/2" TV #139-337 narrow crown staples. It is suitable for flooring, housewrap, insulation, roofing underlayment. It has a limited lifetime warranty.