Bike frok mount, universal accessory, suitable for mountain bikes and road bikes. Made of high-quality aluminum alloy, sturdy and wear resistant, strong load-bearing capacity. Equipped with rear wheel fixed base, with two kinds of arcs, suitable for different bicycle models. Quick release lever design, it is easy to install and remove. With a fastener to help crank reduce shaking. Small and portable, it is suitable for storage, transportation or indoor use. Specifications: Colour:black Material:Aluminum alloy Package Contents: 1 set * car roof rack Only the above package content, other products are not included. Note: Light 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.