Tacwise Type 13 4mm Professional staples packs are produced from premium quality raw materials to exacting specifications. Tacwise staples are manufactured from quality materials to exacting standards For use in Tacwise Z1-13, Z1-13L, Z3-13, Z3-13L Fine Wire Staple Pack Size 5000 For Use in Rapid M10Y, R23, R13, MS610, Tacwise 813D, Tacwise 813P,Tacwise 813T 4mm leg lengths.