The Fox Edges Powergrip Tail Rubbers (10 pcs) are specifically designed to securely and reliably fix heavy lead weights on the size 7 Edges Lead Clip. The rubbers provide extra grip to prevent the lead from coming loose prematurely upon hard impact on the water surface after a long cast, while the well-thought-out mechanism ensures that the lead is released immediately as soon as a hooked fish comes into contact with obstacles or dense weed beds. This makes the system extremely fish-safe and perfect for fishing on rough waters, allowing you to play fish with maximum confidence and significantly increasing the chance of safely landing a large carp.