Description: Wide Application: Fits for Quick release (5-100), thru axle (12-100, 15-100, 15-W110).Quality Material: Versatile Bikes Block is made of aluminum alloy material, solid, stable and long time use.With 4 Sets Adapters: Bike Car Roof Mount Rack All the adapters included in small size allows you take all of them without any burden.Bikes Block Fork Mount and Rear Wheel Holder: Bikes Block Fork Mount and Rear Wheel Holder Stable and enough to lock your bike on the rack without worrying about scratching your car.Versatile: Can be mounted in a garage, home, shed for storage, and mounted in a truck bed, van, or on a trailer for transporting. Specification: Material: Aluminum Alloy Size Chart: Bike Block Fork Mount:11cmx3.8cmx5.8cm/4.33inchx1.50inchx2.28inchRear Wheel Holder: 10.8cmx7.5cmx3.5cm/4.25inchx2.95inchx1.38inch Package Includes: 1 Bike Block Fork Mount1 Bike Rear Wheel Rack Mount4 Pairs of Adapters4 x Screws4 x Sliders1 Band1 L Wrench Note: Please allow slightly errors 1-2cm differences due to manual measurement.