Kluson is back in the hardware game with these USA made Nashville-style Tune-O-Matic bridges and Tailpieces for Gibson guitars. These are awesome OEM bridges for builders or the DIY repairman offering a longer adjustment area and more mass than the original ABR-1 bridge. They match Gibson specifications and are drop-in non-modification required replacement parts. The Kluson USA? vintage stop-bar tailpiece is a high-quality tailpiece that is very hard to distinguish from the originals of the 50?s and 60?s. Made in America with a 5-step plating process. Made from zinc and plated Chrome, or Gold. Includes 5/16-24 steel studs. Important Specs and Dimensions: Bridge: Thread = M5 - 0.8 Metric (as used by Gibson on Nashville Models) Post to Post Spacing = 2.93 in. (74.5mm) Saddle Notch = Center Notched Saddles Saddle Material = Zmac Bridge Material = Zmac (Except Black which is Aluminum) Post/Thumbwheel Material = Brass Radius = 12 inch Post Top Width = .15 Inches / 4mm Bridge Stud Diameter = 4 mm Smooth Top Bridge Center To Center Spacing = 2.93 inches Saddle Spacing = 10.4 mm. Tailpiece: Tailpiece Material = Zinc Stud Material = Steel Stud Cap Size = 13mm/.5in Thread = 5/16 ? 24 US Thread Stud to Stud Spacing = 3.22 in./ 82mm. FREE Shipping within the 48 States of the continental USA. Buyers outside the continental USA please request a shipping quote prior to ordering. We have a wide range of guitar parts many of which, for various reasons, are not listed here. If you do not see the part you need in our Etsy listings please visit us at www.metalshopmusic.com