The Spare Tire Holder Mount is 7 in. long and Features Durable Steel Construction with a Durable Protective Finish Securely Attach Spare Tires to Your Trailer Wall. Can Also be Used with Floor-Mounted Tracks to Prevent Tire from Sliding Spring-loaded Fitting Connects to Both X-Track and E-Track Anchoring Systems Fast and Easy Installation, Fits Through any Lug Hole on Tire Rim Easily Reposition to Different Location on the Rails as Your Organization Needs Change Includes a Nut to Secure Your Spare Tire on the Hanging Post (Nut Fits any Lug Hole on Your Tire's Rim). Limited 3-Year Manufacturer Warranty The Spare Tire Holder Mount is 7 in. long and Features Durable Steel Construction with a Durable Protective Finish. The Robbor Spare Tire Carrier Easily Snaps into Your E-track or X-track System to Mount a Spare Tire Inside Your Trailer. Fits Automobile, Trailer, and ATV Tires. Can also be Used with Floor-mounted Tracks.