Kluson has stepped out of the shadows! Introducing the NEW Kluson 19:1 ratio diecast tuning machine. These state of the art diecast tuners are designed for usage on contemporary guitars and utilize the same mounting hole common to Grover 305 series medium tuners as well as the common Gotoh tuner with the mounting screw located offset at approximately 7 O'clock or 4 O'clock depending on left or right handed application. Uses the common modern 25/64 in. (10mm) peghole with a hex head type screw-in bushing and single mounting screw. All mounting hardware is included.