The front fork bracket of the bicycle is made of high-quality aluminum alloy, which is sturdy, safe, stable, and has excellent performance. The surface is made of rust resistant material, waterproof, and durable. It is very suitable for daily camping use. Application : This bicycle pack holder is suitable for M10x100mm, M12x100mm, M15x100mm, M15x110mm quick release axle and quick release front fork, suitable for most models.[Easy to install] This front fork bicycle lock can be firmly installed on your roof vertically or horizontally as required. The quick release alloy structure makes the front fork of the bicycle sturdy without increasing weight.[Easy to carry] Hang your bike on the roof frame, and our car bike frame can connect your bike to the back of the van/SUV/roof. Small size, fast and convenient installation, no paint damage, easy to carry, and no burden.Widely used: The bicycle roof frame can be installed in garages, houses, warehouses, etc. It can also be installed on trucks, trucks, or transport trailers.