We have four adapters available for quick release 5x100mm, 12x100mm, 15x100mm, 15x110mm width thru-axle fork mounts. Can provide safety for more bikes when transporting or storing. Suitable for mountain bikes, road bikes, , snow bikes, etc. Fine workmanship and perfect style. High Wear-resistant and excellent durability. The bicycle fork and rear wheel are mounted between the rack grooves for added stability, but are only available on cars with this rack. It can be fixed to the rear of the pickup truck/SUV/or car roof and used for storage inside the car. quality control standards to build and test. Brand Name: Capacity (Load): 30KG Type: Car Racks color:Black Material:Aluminum alloy size:110 x 90 x 57.7mm Package Contents: 1 x Front Fork Bracket 8 x thru axle 1 set x nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.