Completely made of stainless steel. Stainless steel is rust and scratch resistant. The surface is mirror polished and very easy to clean. because the sponge drains and dries quickly thanks to its open and lightweight design Easy installation The stainless steel sponge holder is very easy to attach and remains stable. No tools, no drilling, no holes. Simply attach it to the back of the sink with the adhesive pad Waterproof & Strong & Removable strong adhesive for a long time, heavy use, not easy to fall off. Strong and unique transparent adhesive hooks stick to the surface for a long time, more durable and stronger than the suction cup. Once pressed, it sticks incredibly strong and can be removed from smooth surfaces without leaving large residue Multi-function The sponge holder is suitable for sponge, dishcloth, bath ball, steel ball. Can also be used as a hook in kitchens and bathrooms, ideal for hanging towels, brushes, spatulas, cutting boards etc. Ideal for use in kitchens,