Features:Good electrical conductivity and thermal conductivity.570pcs solid copper sump plug washer set for multiple choices.All contained in a compact and see through compartmented plastic case.Great for sump plugs, water, fuel and hydraulic fittings.A sump plug washer set to suit all types of engines be it Car, Marine, Generators, Machinery and Plant. Specifications:Material: CopperSize types: 30Quantity: 570pcsBox size: Approx. 18 x 27 x 4.5cm / 7.08 x 10.62 x 1.77inchWeight: 744gWasher Size:40pcs x Copper Washers4*8*1 40pcs x Copper Washers5*9*1 40pcs x Copper Washers6*10*1 40pcs x Copper Washers6*12*1 40pcs x Copper Washers8*12*1 40pcs x Copper Washers8*14*1 40pcs x Copper Washers10*14*1 40pcs x Copper Washers10*16*1 40pcs x Copper Washers12*16*1.5 40pcs x Copper Washers12*18*1.5 40pcs x Copper Washers13*18*1.5 40pcs x Copper Washers14*18*1.5 5pcs x Copper Washers14*20*1.5 5pcsx Copper Washers16*20*1.5 5pcsx Copper Washers17*21*1.5 5pcsx Copper Washers17*23*1.5 5pcsx Copper Washers18*22*1.5 5pcsx Copper Washers18*24*1.5 5pcsx Copper Washers20*24*1.5 5pcsx Copper Washers20*26*1.5 5pcsx Copper Washers21*26*1.5 5pcsx Copper Washers21*28*1.55pcsx Copper Washers22*27*1.5 5pcsx Copper Washers22*29*1.5 5pcsx Copper Washers24*30*2 5pcsx Copper Washers26*32*2 5pcsx Copper Washers27*32*2 5pcsx Copper Washers28*34*2 5pcsx Copper Washers30*36*2 5pcs x Copper Washers33*39*2 .