Bikegear Truck Bed Mount is a sturdy, reliable way to transport your thru-axle bike in your truck bed. This bolt-on system installs easily and holds bikes with 12-mm or 15-mm thru axles. Includes set of 3 axles sleeves. Features: Lets you transport 1 bike with a 12-mm or 15-mm thru axle in your truck bed or trailer Includes 3 interchangeable axle sleeves for bikes with 12-mm, 15-mm, and Boost 15-mm axles Attaches directly to your truck bed or trailer . Holes fit 1/4" and 6-mm bolts Large center opening makes it easy to feed cable lock .Strong, non-corrosive cast aluminum construction with black anodized finish. Hard mount bolt-down to carry thru-axle forks.This customizable mounting platform is primarily intended for truck beds, but it also works great attached to trailers. Its cast aluminum base features two holes for mounting to a wide variety of platforms. The user needs to drill holes through the truck bed or installation surface before mounting. Its open design is going to allow you to secure your bike with a cable lock. This can be mounted anywhere in the back of your truck. For a permanent solution, Bikegear Truck bed bike Rack can be mount to the bulkhead, on top, down in the bed, or on the side rails