This is a multipack of black 3/4 inch tap washers, these are commonly used as spacers to stop nuts from untightening or to spread the weight of a load out on a bolt. The smooth surface of the washer ensures that the nut is properly screwed on and that the nut is tightened with equal pressure on all sides to stop leaks. Features: These are commonly used as spacers Stops nuts from untightening Equalizes the weight of a load out on the bolt Ensures that the nut is properly screwed on Pack of 8 washers Specification: Material: Plastic Finish: Black Colour: Black Brand: Oracstar Size: 3/8" Diameter: 3/4"