【Material】Made of metal, our hooks are sturdy and smooth and won't hang on fabrics or materials. 【Features】This hook saves you a lot of space and can be installed in small spaces like bathrooms, garages, behind doors, etc. 【Application】This door hanger hook is practical on door towel rack/coat rack for placing clothes, towels, hats, robes, etc. 【Easy to install】These wall hangers are easy to install without drilling and nail free, can be tracelessly installed on the door without damaging it.