Description: 【Starting Clamp Extension Line】Extension Line for Tennis Squash Badminton Racquet Starting Clamp. 【Sturdy Material】Made of high quality nylon material, ultralight and high strength, durable for long time use. 【Function】Extension Cord for sports starting clamp can help better to maintain tension and prevent the thread from unraveling. 【Stringing Tool Accessories】Starting stringing clamp tool accessories for tennis badminton racket. Our nylon wire is a nice replacement part for you. 【How to Use 】1. Remove the apron, and insert the double wire ends symmetrically to starting clamp; 2. Insert the first apron; 3. Push the first rubber loop close to the starting clip; 4. Put the second rubber loop at the end to prevent the thread from spreading. Specification: Material: Nylon Total Length: 1m/39.37inch Length After Folding: 0.5m/19.69inch Wire Diameter: 1.3mm/0.05inch Package Includes: 1 Extension Line for Badminton Racket Starting Clamp(Only Extension Line)(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.