General description Copper Washer Gasket Nut and Bolt Set includes 200 pieces of flat ring washers made from high-quality copper, ideal for various applications including sump plugs, water, fuel, and hydraulic fittings. This assortment kit is compatible with a wide range of engines, including cars, boats, generators, and machinery. Technical specifications Material: Copper Melting point: up to 1083°C Sizes included: 1: 9mm x 1mm (30 pieces) 2: 10mm x 1mm (30 pieces) 3: 12mm x 1mm (20 pieces) 4: M8: 12mm x 1mm (20 pieces) 5: M8: 14mm x 1mm (20 pieces) 6: M10: 14mm x 1mm (20 pieces) 7: M12: 16mm x 1mm (20 pieces) 8: M12: 18mm x 1.5mm (20 pieces) 9: M14: 18mm x 1mm (20 pieces) Other information Please allow 1-2mm errors due to manual measurement. The color of the item displayed in photos may vary slightly due to monitor calibration.