Features: Make from Zincs Alloys and spring Steel, Enduring, strong and have a long service life, easy to grasp. Wide head designs, 3/4 springs, large clamping force, suitable for badminton/tennis rackets. The hand feel delicate, each chamfer is relatively smoothly, comfortable and easy to handle. The tennis racket starting clamp will not damage the string, wide head avoids hurting hands while tying knot. The clamp is a tool often used in threading work, this tool can hold the racquet line well. Specifications: Component: Zincs Alloys and spring Steel Type: 3/4 spring/4 Spring Color: Green/Red Color/Black Length: about 14cm/5.51inch Package Includes: 1pc Racket Starting Stringing Clamp note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.