High quality materials: The hooks are made of durable and sturdy iron. The non-slip coating is made of sturdy PVC which can protect our ladder hooks from scratching Various functions: The hooks have two sizes for various uses. Such as folded chairs, ladders, bicycles, tools, garden hoses, sports equipment and other large and heavy objects Resistance to gravity: The hooks are a set of 6 double hooks fixed to the wall. Extended length and non-slip coating can safely support 30kg(Brick/concrete wall) Easy to install: place the tip of the plastic anchors on the place you marked and tighten the screw using a screwdriver.Notches on the back plate allow quick positioning and easier mounting Features Yeuri Notches on the back plate allow quick positioning and easier assembly Premium hardware, durable heavy duty iron PVC materials resist moisture and corrosion. It also reduces the friction area of hanging objects Extended length plate for superior hold Installation instructions 1. Choose and mark the position for installation 2. Use the drill bit to drill a hole in the wall according to the size of the expansion screws 3. Place the hook on the wall and insert the expansion screws 4. Use the screwdriver to tighten the screws on the hook Package includes U-hook: 3 pieces J-hook: 3 pieces