Otter Pro Sled HDX Hyfax KitNEW HDX Hyfax is an extremely tough and wear resistant UHMW plastic designed to extend sled life and make towing and pulling much easier. Each kit includes hardware to mount directly into the molded in sled pockets. Medium Size Features: Fits Medium Pro Sled and all Cabin X Over Packages (XT, XT Pro, XTR, Pro XS) Extremely wear resistant UHMW plastic is ideal for rugged environments Protects sled bottom from the wear and tear of abrasive surfaces like