Feature:1. Good electrical and thermal conductivity, high reliability and more convenient to use.2. High quality red copper material with melting point up to 1083℃, super high temperature resistant.3. Suitable for sump plugs, water, fuel and hydraulic connections. widely applications.4. 15 Slot design of the box, each slot has washer with different sizes to meet your demands.5. Included plastic box has multiple compartments to keep all parts organized and easy to carry.Specification:Condition: 100% Brand NewItem Type: Red Copper WasherMaterial: Red Copper Quantity: 150pcs (Inner Diameter x Outer Diameter x Thickness): M5x 9x 1 x 10pcsM6x 10x 1 x 10pcsM6x 12x 1 x 10pcsM8x 12x 1 x 10pcsM10x 14x 1 x 10pcsM10x 16x 1 x 10pcsM10x 18x 1 x 10pcsM12x 16x 1 x 10pcsM12x 18x 1.5 x 10pcsM14x 18x 1 x 10pcsM14x 20x 1.5 x 10pcsM16x 22x 1.5 x 10pcsM18x 24x 1.5 x 10pcsM20x 26x 1.5 x 10pcsM22x 28x 1.5 x 10pcs Package List:10 x M5x 9x 1 10 x M6x 10x 1 10 x M6x 12x 1 10 x M8x 12x 1 10 x M10x 14x 1 10 x M10x 16x 1 10 x M10x 18x 1 10 x M12x 16x 1 10 x M12x 18x 1.5 10 x M14x 18x 1 10 x M14x 20x 1.5 10 x M16x 22x 1.5 10 x M18x 24x 1.5 10 x M20x 26x 1.5 10 x M22x 28x 1.5