Features:Good electrical conductivity and thermal conductivity.395pcs 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: 18Quantity: 395PCsBox size: Approx. 28.5 x 13 x 3cm / 11.22 x 5.17 x 1.18inchWeight: 580g395PCS Copper Washers Model:SizeQuality 5x8x1mm50Pcs6x10x1mm30pcs8x14x1mm30pcs10x16x1mm20pcs12x18x1mm20pcs13x18x1mm20pcs13x19x1.5mm20pcs14x18x1mm20pcs14x20x1mm20pcs16x20x1mm20pcs 16x22x1mm20pcs17x23x1.5mm15pcs18x24x1mm15pcs20x27x1mm15pcs22x30x1.5mm10pcs24x30x1.5mm10pcs 26x33x1.5mm10pcsPackage Included:1 x Box of 395pcs Copper Washers