The Air Locker A14 Heavy-Duty Professional T50 Hammer Tacker is the ideal professional stapling tool for roofing underlayment, insulation, carpeting, and many other construction applications. Manufactured with a full steel base for durability and professional performance. Equipped with a hammer style ergonomic handle to provide maximum force with each staple strike. Uses: Used for installing roofing materials, insulation, carpets, padding and other thick materials.