The Arrow Fastener 50824 is a T50 type staple in 1/2-inch length, 3/8-inch crown width. The staples fit Arrow T50 heavy-duty staple guns for general construction, upholstery, insulation, and fastening work. The 1/2-inch leg supports thicker materials than shorter T50 staples. Supplied as a 1250-pack box for industrial, contractor, and MRO hand tool programs.