Made from a special manufactured soft rubber material that provides excellent levels or resilience, these buffer beads are ideal for using with all running-rigs. Where they really come into their own though is when long distance casting with heavy leads and small baits is required as the bead effectively protects the knot between the main line and trace swivel from damage. Designed with a large bore that can easily accomodate both heavy nylon and braided lines. Diameter has been designed to work perfectly with the PikePro Run Rings (Q69).