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. 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 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. FREE Shipping within the 48 States of the continental USA. Sorry but no international shipping. 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