Self-adhesive tape: Quick and easy assembly. Strong adhesion and waterproof. No drill hole required. Removes easily and leaves no trace. Suitable for bathroom and RV use. Rust Proof: Constructed of premium type 304 stainless steel, with an added 18/8 chrome/nickel content to protect against corrosion and corrosion. rust. Suitable for humid environments such as bathrooms and kitchens. Fits most paper roll sizes: 5.2 inch effective arm length. The open-sided swing arm design makes changing rollers quick and easy (opening can be left or right facing). A short pin at the end of the arm prevents the paper roll from slipping. Applicable surfaces: Clean, dry and smooth wall surfaces such as ceramic tile, marble stone, metal, glass, etc. Be sure to clean and dry wall surfaces before installation. Not recommended for painted, wallpapered or uneven surfaces. Durable & Safe: All stainless steel construction ensures long life. No sharp edges. Dimensions: 1.7 inches (height) by 3.3 inches (width)