Dowel -Crushed Copper Flat Washer Highlights Generic Brand Crushed Copper Flat Washer Description: 100% brand new and high quality. Premium copper material, melting point up to 1083. Good electrical conductivity and thermal conductivity. 280Pcs Solid Copper Sump Plug Washer Set. All contained in a compact and transparent plastic case. Ideal for sump plugs, water, fuel and hydraulic fittings. A crankcase plug washer suitable for all types of engines whether car, marine, generators, machinery and factory. specification: Material: Copper Box size: about 130x68x22mm/5.12x2.68x0.87inch Size types: M5-M14 Quantity: 280pcs M5*9*1 30pcs M6*10*1 30pcs M6*12*1 20pcs M8*12*1 30pcs M10*14*1 30pcs M8*14*1 20pcs M12*16*1 25pcs M14*18*1 25pcs M12*18*1.5 20pcs M16*20*1.5 20pcs M16* 22*1.5 15pcs M20*26*1.5 15pcs Package Include: 1Pack of 280pcs Copper Washers 1 Piece Case Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Due to manual measurement, there may be 1-2cm error in size