STRONG & DURABLE - These bike hooks are made from heavy-duty durable stainless galvanized steel and PVC Coated with a soft non-marring, non-slip coating to protect surfaces.Strong and durable,keeps the bike from swaying.Suitable for use anywhere in your house,including your kitchen,bathroom,garage,hallway,garden shed and more. EASY INSTALL - When using our bike wall mounts, make sure to install in a stud/wood wall (not drywall, only) to ensure the hook stays secure.Easier to fit if you drill a small pilot hole but you can get away with just screwing them in by hand.they will only work if you fix them in the ceiling rather than the wall FEATURES - Perfect for use as storage hooks for garage or storage hooks for bikes.Ideal to use for ceiling storage wall hanging of bicycles, power equipment, furniture, tools, and hoses, in the garage, home, apartment or wherever you store your items.Can be used in both walls or ceiling,also work well for cement walls with expansion screws. ADVANTAGE - Our bike hooks have a unique, wide-mouth design providing for easy-on / easy-off storage.Vertical bike holder set-up saves space and is highly cost-effective when compared with a traditional bike rack.Easy to fit,handy size.Perfect for both indoor and outdoor storage. PURCHASE NOTE - Package include 6 pcs red bike hooks.Hook Length: 15.6cm; Screw Part Length: 2.5cm.The maximum wheel diameter of your bike should be no more than 5cm.Or you can trimmed back the PVC otherwise when screwed in it splits the coating. Each bicycle hook can hold 15.43 pound,not great for heavier bike weights.You'd better use 2 pcs bike hooks for holding an adult bike or heavy duty product