Material: Crystal glass and aluminum, solid structure and shiny sparkling appearance, the best decoration for your home and office. Size: Buttons are about 1.18 inch (30mm) in diameter, about 1.18 inch (30mm) high Application: The crystal knob is very pretty, artistic and durable, ideal for installed cabinets, wardrobes, dressers, drawers, bathrooms, closets, trash cans, cabinets, newborn rooms, wardrobes , bedside tables, large jewelry holders, drawers, etc. Easy to install: Find the position where you want to install on the board and drill a hole, then pass through the screw on the back of the board and screw the knob tightly. You may need to purchase screws of another length depending on the thickness of your cabinet. Package includes: 10 * All black buttons