Motion Pro Rimshield II Rim Protector Improved version of original Rim Shield. Made with genuine DuPont Zytel Super Tough nylon resin for unmatched strength and durability. Prevents rim damage from tire levers during tire changes. Dual raised beads facilitate inserting tire lever under tire bead and prevents tire lever from slipping. Won't mar wheels. Hand holds make it easy to insert and remove. Long apron protects hands and spokes. Patented design.