[Solid Material]: The cabinet knobs are made of aluminum alloy.They plated by matte black finish, which accompanied with good looking and fine touch.They can effectively protect against and rustproof. [Satisfaction ]: is committed to providing our customers with high-quality cabinet knobs. If you have any questions, please contact us by email, and we promptly provide you with a satisfactory solution. Please rest to buy! [Measurements]: Diameter: 1.16 inch (30mm), Height: 0.98 inch(25mm). Easy to install, even people with no experience can easily install. [Widely Applications]: Each of our matte black knob is carefully polished to achieve a perfect appearance. They can be perfectly applied to kitchen cabinets, bathrooms, drawers, cupboards, wardrobes, and more. As a gorgeous decoration, they add a fresh touch. Colour:black Material:aluminum alloy Package Contents: 30 x cabinet knobs 30 x standard 1 inch screws 30 x breakaway 1.8 inch screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.