The starting clamp is made of high quality zinc alloy and steel, high strength, strong and durable [Design]: Starting Stringing Clamp Tool for Tennis Badminton Racket, an essential tool for any tennis racquet [Easy to Use]: The tennis racket starting clamp won't damage the string, wide head avoids hurting hands while tying the knot

•  3 springs to help better maintain tension, Spring grippers can be used as an extra starting clamp or for pulling tension on short strings
• Badminton racket racket stringing tool, the handles provide grip and comfort. Great accessories for stringing
• Specification: Material: Zinc Alloy, Steel
• Size Chart: Starting Clamp: 14cmx7.5cm/5.51inchx2.95inch
• Extension Cord Length: 1m/100cm/39.37inch, Fold 0.5m/50cm/19.69inch
• Wire Diameter: 0.13cm/0.05inch
• Package Includes: 1 Starting Clamp 1 Extension Cord