Practical Space-Saving Tool: A messy garage is a real headache! GU.B/bon is here to keep your garage or indoor space tidy and clutter-free. The GU.B/bon bike rack offers a clutter-free solution for bike storage. Very suitable for apartments, houses, garages, and more. Sturdy Aluminum Alloy Structure: Made with durable and premium aluminum alloy, this bike rack is capable of supporting a bike up to 55 lbs (25 kg) and is also fireproof, waterproof, and rustproof. Better yet, the bonus bike wheel strap prevents the wheel from spinning. Ultra Versatile: Don't worry about not finding the right size. With an adjustable length of 22-32cm and an adjustable width of 17.7-35.5cm, this auto-locking bike rack can fit most standard bikes like road bikes, hybrid bikes, and mountain bikes. Just press the button on the rack and you're done! (Note: Not suitable for fat bikes or bikes with wide handlebars (78cm) and a long wheelbase). Installation Tips: Make sure to install the bike rack on a solid wall made of studs, beams, masonry, or concrete. Do not install the bike rack on unsupported walls or drywall. Before installation, please determine the wall characteristics and avoid gas lines, water lines, circuits, and drains. Drywall Installation Tips Mount a wooden board over drywall or plasterboard with a stud underneath.