Made of high quality aluminium alloy. Self Adhesive no-punching installation or screw installation. Perfect for kitchen, bathroom, etc. Specification Size: 31.5cm * 4.5cm * 9.5cm Bar Length: About 30cm Due to manual measurement, the size figures may have a little error. Thank you for your understanding. Material: Aluminium Alloy Color: Black Instructions: Self Adhesive 1. No need to drill holes in wall. Clean and dry the wall surface where you plan to install the item (Must be a smooth surface, such as ceramic tiles, metal surface, glass, etc. Not suitable for wallpaper or painted walls). 2. Peel off the protective film of the adhesive on back of the plate. (Use the hair dryer to heat the adhesive when the temperature is low.) 3. Stick the item on the wall and press it for about 10 seconds. 4. Recommended to leave it for 24 hours before use. Screw Instructions (If it is installed on a wooden board, please ignore the first and second steps and go directly to the third step): 1. Measure the pitch and drill the holes. 2. Use hammer to put the expansion screws into the holes. 3. Screw the bracket in the wall and then cover the screws with screw caps.