Check the listing for details. 2Pcs Embedded Badminton Stringing Racquet Load Spreader Adapter Protector, Blue. Condition: New. Listed at 13.69 USD. The badminton stringing load adapter is suitable for most models of manual threading machines, protecting your badminton racket.SpecificationColor: BlueMaterial: PVCSize: 3.5 x 1.3 x 0.9 cm / 1.38 x 0.51 x 0.35 inch (L*W*H)Packing List: 2Pcs x Badminton Stringing Load SpreaderAdvantageThese badminton stringing protectors can be used to increase the contact surface between the stringing machine and the racket, thereby distributing the pressure, effectively preventing the racket from breaking due to excessive tension during the stringing process, and also preventing the racket from moving up and down. The wire groove design is convenient for threading.InstructionPlace the high pounds adapter protectors on the upper and lower positions inside the racket head frame (the position of the racket hook).