Contractor grade hammer tacker. Uses 1/4″, 5/16″, 3/8″, 1/2″, and 9/16″ staples or Arrow No. T50 heavy-duty staples. Will take 2 strips of staples. Easy-to-load. Shock absorbing rubber handle helps prevent fatigue. Great for insulation, upholstery, poly sheeting, tar paper, and house wrapping.