LT 1 Heavy Duty Universal Staple TackerA heavy duty all purpose tacker, fitted with a wire guide attachment for stapling small diameter cables. Comes with a starter pack of 600 staples. The UNIQUE FEATURE of this tacker is that it uses a wide range of commonly available American staples, including Markwell L3 Series heavy wire staples, 0. 050" x 0. 020, (1. 27 x . 5 mm) 20 gauge galvanized steel staples: L3A 1 4" (6mm), L3B 5 16" (8mm), L3B 5 16" (8mm) Quinn Pack, L3C 3 8" (9. 5mm), L3M 7