Features: Silicone vibration dampeners with double hook design minimize racket vibrations, enhances control during intense matching, and provide shock absorption for tennis strings. The elongated shape with reinforced silicone construction cover stringbed area, absorbing impacts while maintaining compatibilitys with all racket types through tool frees installation. Designed for competitive player and frequent trainers needing enhancing vibration reduction to prevent wrist strain during prolonged practice. Optimizes performances in fast paced tournaments or casual club game by delivering precise ball feedback and stable string tension management. Color coded set allows quick customization across multiple rackets while retaining elasticitys across temperature variations for play consistency. Specifications: Component: Silicone Size: Approx. 3.93inch(10cm) Color: Yellow/Red/Blue/White/Mixed Color Package Includes: 4x Tennis Racket Dampener note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.