Material: High quality aluminum alloy and stainless steel. Matte black texture, the button is smooth, comfortable and perfect. Quantity: 10PCS black cabinet door knob. Each button is supplied with a fixing screw. Size: Button diameter: 30mm, Height: 25mm. Screw length: 23mm. Please make sure the thickness of your drawers before ordering.(2MM error) Simple design: brief appearance, modern style, easy to install and clean. Safe: smooth surface without edges and corners, very safe for children, can be used for cabinet, drawer, chest, bin, dresser, closet, children’s room