High Strength Screws: Our screw-on H&S mug hooks are made of PVC coated steel for extra hold. These hooks are built strong and durable to ensure they will last for years Non-Slip Coating: Each black & white hook is 5cm long with a 2.2cm screw. The durable coating will not easily deform. In addition, it prevents the cup from moving or sliding when hanging Removable & Compact: These black & white screw-on hooks can be easily attached to the wall. They can be removed when not in use. Easy to store, space saving. They are also suitable for rags, utensils, etc. Easy Installation: With a 2.2 cm screw, the hook is easy to install on the wall, ceiling or any other surface, because it fits perfectly. There is no need for a powerful drill, just push and turn to screw it in Gift Idea: These cup hooks can be used both outdoors and indoors. This is an original gift idea for any occasion for someone who likes to keep their space tidy and organized