Are you looking for a professional and practical oil plug crush washer? If yes, our crush washer assortment kit must meet your needs. Manufactured with copper material, durable and sturdy for long-lasting use. Fine workmanship and practical functions, suitable for many kinds of electrical connections. Features -Color:Assorted Color -Material:Copper -Size:17.20X9.50X2.30cm/6.76X3.73X0.90in - Compact and small, you can carry these washers anytime and anywhere, easy to carry and store. - The operation process is simple, copper crush washer assortment is a must-have for maintenance tasks with confidence. washers have a high temperature resistance and high conductivity, tighter seal, durability and . - Flat washers are mainly used to prevent leakage, isolate, loosening, perfect for marine applications. washers can be used for electrical connections, like household, automotive, marine, etc. Package list: 30 washers M5x9x1 30 washers M6x10x1 20 washers M6x12x1 30 washers M8x12x1 30 washers M10x14x1 20 washers M8x14x1 25 washers M12x16x1 25 washers M14x18x1 20 washers M12x18x1.5 20 washers M16x20x1.5 15 washers M16x22x1.5 15 washers M20x26x1.5