Body made of heavy duty aluminium and internal mechanism of steel. Ergonomic handle made of nylon and TPR with safety system. Easy-to-operate trigger. Easy staple reload system. For staples thickness 0.6 mm. For 5/8″ 18 gauge nails for cladding, carpeting, woodwork, upholstery, chipboard, plastics and others. Staple Type: 140 series (10.6mm wide crown). Staple Length (that can be used): 9/16″ (14.2mm), 1/2″ (12.7mm), 3/8″(9.5mm), 5/16″ (7.9mm), and 1/4″(6.3mm). Nail Measurement: 5/8″(16mm) 18 gauge.