Durable quality: The knob handles are made of strong aluminum alloy, lightweight and last a lifetime, solid construction, matte black texture, the knob is smooth, comfortable and perfect. Easy installation: drill a hole in the board (suitable for thickness 19mm-22mm), insert the screw through the hole, tighten the knob with the end of the screw. Absolutely safe: the surface of our cabinet door knobs is smooth and has no edges or corners, which is very safe for children, parents and friends, you can rest assured. Specification: 12 pcs black cabinet door knob, each knob comes with a screw, no need to buy new screws, simple and most economical way to decorate an elegant space. Wide application: These handles are suitable for various types of cabinets, wardrobes, wine cabinets, cupboards, especially kitchens and bathrooms, ideal for replacing knobs on drawer handles.