RC-WTD Magnum Tire Trapper Wheel Tie Down kit is designed to secure anything with wheels to the floor of a trailer. The two chocks can be mounted directly to the trailer floor of an open or enclosed trailer. The Main Strap is 7 ong and has a capacity of 800 lbs.Includes: 2 Chocks, 1 Strap system with Ratchet, and Mounting Hardware.