Check the listing for details. Solid Brass Satin Piano Desk Knobs With Machine Screws 5/8" Diameter - 1 Pair. Condition: New. Listed at 6.50 USD. Solid Brass Satin Piano Desk Knobs With Machine Screws 5/8" Diameter - 1 Pair This is a pair of New Satin Brass piano desk knobs which include the screws to attach them to the keyboard cover of your piano. There are 2 different types of screws available. One is a wood type screw and the other is a machine screw. The picture shows the machine screws. If you need the wood type screw please send me a message, otherwise I will send the machine screws as these are the most commonly used. These knobs are designed specifically for a piano. The dimensions of each knob is 5/8" in height and 5/8" in diameter. We offer combined shipping on most of the items we sell. You can put the items you are interested in into your eBay shopping cart and eBay will automatically calculate any combined shipping discounts. Please let me know if you have any questions International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.