Made of Stainless steel and plastic, durable, rustproof, and lightweight. - Compact & easy to use: spring-loaded flying clamp holds badminton strings firmly without damaging strings, helping you to string badminton rackets more neatly and easily. - Allows the clamping tightness to be altered, depending on the string gauge. - suitable for tennis, squash, badminton and racquetball - Size(LxW): Approx.7.6x3.35cm/ 2.99x1.31inch