Kethy Olympia Knob L4314 Cabinet Knobs are used as a handling feature for opening and closing cabinet doors or drawers. (e.g. Usually used but not limited to kitchen cabinets and drawers, pantries, dressers, and many other small storage) Cabinet Knob Function - Facilitates the operation of cabinet doors and drawer by gripping the pull knob before pulling it to open or close the cabinet door or drawer. Specifications: Diameter: 50mm 65mm Projection: 20mm 25mm Width: 50mm 65mm Available Finish: Black Stain Oak Walnut Note: The screw depth on Kethy handles can vary depending on the design, Most knobs and handles have sufficient thread depth to allow a 22mm or 25mm screw to fix to either 16mm or 18mm doors or drawers. Knobs and handles are supplied with the correct screw for these thicknesses depending on the handle. Longer screws can be supplied upon request, up to 50mm long.