This spare tire holder for E-track and X-track lets you mount your spare tire up and off the floor in your enclosed trailer. Holds most automobile, trailer, and ATV tires. Can also be used with floor-mounted tracks.Features: Holder lets you store your spare tire up and off the floor of your enclosed trailer Can also be used with floor-mounted tracks to prevent tire from sliding Holds most automobile, trailer, and ATV tires Easy installation - just snap spring-loaded fitting into E-track or X-track anchor points Holder can be easily moved from one E-track or X-track slot to another Simple to use - just slide spare tire onto post and secure with included nut Fits through any lug hole on tire rim Durable steel construction with yellow zinc coating is corrosion resistant Specs: Post dimensions: 5-5/8" long x 1/2" diameter Nut size: 19 mm 1-Year limited warranty