Erickson Wheel Chock Tie-Down Kit includes (2) E-Track Ratchet Straps and (4) Powder Coated E-Track Wheel Chocks. Designed for hauling ATV, Mowers or other off-road vehicles regularly. Wheel chocks are permanently mounted in place on your trailer deck with brackets that are intended to be placed behind both back wheels to hold vehicle securely during transport. Simply drive over the brackets while loading and unloading. Rated for a vehcile with maximum weight of 1500 lbs. Strong webbed straps will work on tires as small as 10" and as large as 30" in diameter. Double slotted E-Track allows for proper hook up on large and small tires. Mounting hardware is not included.