These Lumo have many different uses when making rigs. Often used to prevent knot failure by acting as a shock absorber between running sinkers and knots, or to keep skirts from slipping down over hooks. Also useful when used before your swivel to prevent it from being wound through the top rod guide. A must have in your tackle box. When fishing with beads the colours can also act as a fish attractant. Effective when fishing in deeper water or at night due to the fact that they glow in the dark.