Material: The crystal shape knob is made of glass and aluminum, which is more sturdy and durable with simple and elegant appearance. Application: The crystal shape knob is very beautiful and durable. It is very suitable for cabinets, dressers, drawers, wardrobes, cupboards, bookcases in the home, kitchen, bathroom, living room, study room, dormitory and office, and other places where you need to install the handle. Do-it-yourself. Easy to install: find the place you want to install on the board and drill a hole, then pass the screw through the back of the board and tighten the knob.< /p> Size: what you see now is 30mm, 10 pieces of black crystal handle, with 10 screws of the same size, easy to install. Package: you will receive 10 crystal handles and matching screws. The decoration in the photo is for reference only.