1. Silicone roller, good anti-slip effect, no damage to fishing rod
2. Universal 8mm nut, suitable for most brackets
3. Easy to install and easy to use
4. With luminous effect, detachable design
5. Material: silicone, metal, plastic
6. Size: small 4.5cm, large about 5.6cm
7. Weight: about 30g for small size, about 40g for large size