This is a multipack of 1/2 inch polythene 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 5 washers Specification: Material: Polythene Finish: White Colour: White Brand: Oracstar Size: 1/2" Diameter: 1/2"