... off action Specifications & Placing capability:Riveting Capacity:M4-M12(8", 10", 1/4", 5/16", 3/8", 1/2")in all ... materialsStroke:7MMAir Pressure:5-7KGFWeight:2.46KGOptional Mandrel:8-32UNF, 10-24UNC, 10-32UNF ... 4-28UNF, 5/16-18UNC, 5/16-24UNF,3/8-16UNC,3/8-24UNF,1/2-13UNCAccessories:Five nose pieces (M4, M5, M6, M8 ... piece of syringe;One regulator . Air Nut Rivet Gun M4-M12 SGR008