Prevents rim damage from tyre levers during tyre changes. Dual raised beads facilitate inserting tyre lever under tyre bead and prevents tyre lever from slipping. Durable nylon construction won't mar wheels. Handholds make it easy to insert and remove. Long apron protects hands and spokes. Made with genuine DuPont Zytel Super Tough nylon resin for unmatched strength and durability. Set of two.