Features: Good electrical conductivity and thermal conductivity. 568pcs 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: Copper Size types: 30 Quantity: 568PCS Box Size: Approx. 18 x 27 x 4.5cm / 7.08 x 10.62 x 1.77inch Weight: 744g Washer Size: 40pcs x Copper Washers4x8x1 40pcs x Copper Washers5x9x1 40pcs x Copper Washers6x10x1 40pcs x Copper Washers6x12x1 40pcs x Copper Washers8x12x1 40pcs x Copper Washers8x14x1 40pcs x Copper Washers10x14x1 40pcs x Copper Washers10x16x1 40pcs x Copper Washers12x16x1.5 40pcs x Copper Washers12x18x1.5 40pcs x Copper Washers13x18x1.5 40pcs x Copper Washers14x18x1.5 5pcs x Copper Washers14x20x1.5 5pcs x Copper Washers16x20x1.5 5pcs x Copper Washers17x21x1.5 5pcs x Copper Washers17x23x1.5 5pcs x Copper Washers18x22x1.5 5pcs x Copper Washers18x24x1.5 5pcs x Copper Washers20x24x1.5 5pcs x Copper Washers20x26x1.5 5pcs x Copper Washers21x26x1.5 5pcs x Copper Washers21x28x1.5 5pcs x Copper Washers22x27x1.5 5pcs x Copper Washers22x29x1.5 5pcs x Copper Washers24x30x2 5pcs x Copper Washers26x32x2 5pcs x Copper Washers27x32x2 5pcs x Copper Washers28x34x2 5pcs x Copper Washers30x36x2 3pcs x Copper Washers33x39x2 Package Included: 1 x Case of 568pcs Copper Washers