he Heavy Duty 160 Piece Nut Riveter Set includes a hand operated Twin Handle Nut Riveter manufactured from a heavy-duty steel construction with moulded grips for two-handed operation. The Nut Riveter Set includes seven different sized mandrels including M3, M4, M5, M6, M8, M10, M12, mandrel spanner for attaching sized mandrel to riveter and 150 PCs Zinc Coated Steel Rivet Nut Inserts. This product is a cost-effective fastening system ideal for a large array of applications including Automotive, Metal Fabrication, Appliances, Food equipment, Industrial machinery, Farm equipment, Electronics, Transportation, 4WD/off-road applications, Marine, and many more,