Feature: 1. Robust Design: The main body of the track ball is made from high density, tough nylon, which is not only sturdy and strong but also resistant to damage, ensuring longevity. 2. Industrial Rubber Surface: The ball head section is made of rubber, boasts exceptional flexibility and resistance to compression and wear. Its sandblasted surface increases friction. 3. Rubber Padding: The accompanying rubber pad not only increases friction to prevent slipping but also prevents damage from the direct contact between the track ball base and the track. 4. For Rail Mounting Systems: Specifically designed for track mounting systems, includes a 1 inch B size rubber ball, providing enhanced flexibility and adaptability. 5. Excellent Performance: With T bolt attached, the track ball offers precise movements, ensuring the best in class performance for all your computing needs. Specification: Item Type: Track Ball Material: Rubber+Nylon . Package List: 1 x Track Ball