This is a set (3 on a side) of genuine Grover Vintage tuners in Nickel, part number 135G, new and blister packed. Gear ratio is 14:1 with a die-cast,?two-piece housing for additional strength and precision. The unique bearing surface in the housing provides a rigid string post that enhances the alignmentof the gear and worm. Post hole size is 25/64". The classic green plastic crown button makes this a perfect choice for restoring the looks of that vintage guitar of yours. All necessary hardware and screws are included. Upgrade that guitar with some new, old looking hardware today! No modifications necessary. These come with a lifetime factory guarantee. Return to Grover for a free repair or replacement. ] 14:1 ratio Requires 3/8"(10mm) peghead holes. Includes screw-in bushings and mounting screws.