Selection of high-quality materials: made of zinc alloy, stable and durable, matte texture, smooth edges, safe Package includes: you will receive 24 round buttons, size: 30 x 22 x 15 mm, including 24 screws (length: 23mm). (Noticed : Before ordering, please measure the thickness of the knob)Easy installation: in the place where you need to install (cabinet door, drawer) to drill holes, fix the knob to the surface , tighten the inner screw and tighten the interface, easy to operate. Perfect decoration: The elegant black round knob is the perfect addition to any cabinet, cabinet door, cupboard, drawer, etc. Complementary. Decorate your furniture with modern design, give your furniture a new look.Wide application: suitable for kitchen cabinets, cupboards, furniture doors, drawers, shelves, etc. Also suitable for all kinds of kitchen, bathroom and bedroom cabinets.Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.