Product: 3.2 / 4.8 / 6.4 mm Lighten Pneumatic Rivet Gun Material:Aluminum,fiber reinforced plastics Type:MSCP-1 Suitable Size:3.2,4.0mm weight:1.0 kg Type:MSCP-2 Suitable Size:4.0,4.8mm weight:1.2 kg Type:MSCP-3 Suitable Size:4.8, 6.4mm weight:1.9 kg