STURDY MATERIAL - Made of high-quality, heavy-duty iron, the hook is wear-resistant and durable. The unique structure makes the strength more balanced and stable. It has an excellent load-bearing capacity, up to 77-99 lbs/35-45 kg. Enjoy long-term use. (Note: Please install the hooks in the direction shown in the main image; otherwise, the hooks will be subjected to uneven stress and may fall.) SPACE SAVING - This bike rack can effectively help you save space. It adopts a vertical wall-mounting design, so when you're finished using the bike, simply hang it vertically against the wall. This frees up more space in your garage for storing other items. SAFETY SYSTEM - There is a rubber coating on the surface of the hook, which effectively protects the bike's surface from scratches. The safety locking mechanism design prevents accidental release. Use it with confidence. EASY INSTALLATION - Easy to install, simply follow the steps to complete the installation. First, mark the desired location. Second, drill holes as needed. Next, insert the expansion screw. Finally, tighten the screws. (Note: Be sure to mount the bike rack on a solid wall only.) WIDE APPLICABILITY - This product is suitable for most bicycles, such as mountain bikes, road bikes, children's bikes, women's bikes, folding bikes, etc. It is also suitable for bike shops, shed corners, garages, carports, apartments, etc. It's a great space-saving solution.