Features: The Shock Absbers of the tennis racket can effectively absb shock, provide a me stable hitting experience, reduce h fatigue. Make of silicone materials, soft enduring, easy to install disassemble, suitable f most tennis rackets. Long shock absption knots, with strong tensile ability, can used f a long terms. Used during matchs, training, leisure playing, it can effectively reduce h vibration, improve hitting accuracy control. Easy to use, you just need to knot it on the racket line to avoid slipping down. Specifications: Materials: Silicone Col: Redness/Blue/Black Col/Pink Col/Green/Purple/Fluescent Yellow/ange/White Col/Light Blue/Transparent Total length: about 11.70cm/4.61inch Package Includes: 10Pcs Tennis Racket Shock Absbers note: Please allow 1-2cm errs due to manual measurement, make surely that you not mind befe der. Due to difference between different monits, the picture may not reflect the actual col.