Designed to protect wheels from damage during tire removal and installation Made with genuine DuPont Zytel® Super Tough nylon resin for unmatched strength and durability Integrated channel design helps guide tire iron and prevents slipping Won’t mar wheels Finger holes make it easy to insert and remove Long apron protects hands and spokes Sold in set of 2 Not for use on HD cast rims. Use P/N 08-0357 for HD cast rims Patented design .