Made of high quality PVC material, lighter and more environmentally friendly Increase the contact area with the racket to avoid breakage and deformation of the racket when threading It can increase the force area and reduce the impact force when the racket is subjected to high tension Place the protector at the 12 clock and 6 clock positions of the racket when using it This product is suitable for a variety of common big brands of badminton stringing machines Specification: Material: PVC Size: : 1.4inch / 35mm Center Rectangle Hole: 0.2x0.4inch / 6x10mm Color: Blue White Black Red Package Includes: 1 Piece Tennis Racket Load Spreader(8 Pack) Note: Color might be slightly different due to the color calibration of each individual monitor Please allow slightly measuring deviation due to manual measurement