U-Style clip-on nut is a multifunctional accessory that combines the functions of locking washers and nuts.It is used in different workspace, various car panels, door trims, bumpers and fenders, and can fully meet your car repair and installation needs.Instruction: Simple to use, just pre-drill holes on the two sheet metal parts, insert the U-clip into one of the sheet metal parts, let the screw pass through the hole and finally fix it in the U-clip.NOTE: Please confirm the size is suitable before purchasing.