MATERIAL: Clear cut crystal glass and alloy base, shiny polished chrome, glittering and sparking, diamond shape, good decoration for your home or office. SIZE: Screw Thread Length:0.8 inch Height:1 inch Diameter: top 1.3 inches bottom:0.6 inch APPLICATION: Fit for cabinet dresser drawers cupboard wardrobe bookcase etc,give your furniture a sparkly new looking. INSTALLION:Easy to install. Find the position where you want to install on the board and drill a hole , then pass through the screw from the back of board anf thread tight to the knob. Be careful during the work. ATTENTION:Please use this knobs with the objects that thickness is not over 1 inch.