Check the listing for details. Mandolin Bridge Thumbwheels Loar Gibson Specifications 5-40 thread nickel plated. Condition: New. Listed at 8.00 USD. Purchasing more than one of my many items here on eBay? Automatically combine the shipping by using the “Add to cart” button. When all the items you need are added to your cart, use the “Go to cart” option to check out. Easy! These are the Gibson Loar Specification Mandolin Bridge Thumbwheels and posts that used to be available but no longer are... until now! These are brand new and with the 5-40 X 5/8 post that is Allen wrench installed (you will need to tap the new bridge if you intend to use these with a 5-40 tap after drilling it to the proper size corresponding to the tap. The diameter of the thumbwheels are: 0.375"The thickness of the thumbwheels are: 0.088" You will receive a pair of thumbwheels and a pair of posts with this purchase. This is enough hardware to completely outfit one mandolin bridge. These are intended to replace worn Gibson thumbwheels or posts or for new construction. These will likely not fit another brand of mandolin bridge without expert alteration, but it usually can be done. The nickel plating on these mandolin thumb wheels is heavy and they are made and plated right here in the USA! The Gibson Mandolin Bridge was photographed for demonstration purposes only and is not included in this purchase, only the posts and wheels. These are the Nickel plated version. Looking for gold plated?... I have those listed too! These won't last long! I will ONLY accept returns on these if they are not returned used, altered, worn or soiled. Returns must arrive back in exactly the same shape as they were sent out from my shop... new, and the buyer pays return shipping. No exceptions. Thank you! Richie DotsonAcoustic Box LLCHopewell, Virginia