Kluson 19:1 ratio tuning machine. These state of the art, lightweight, diecast tuners are designed to directly retrofit the stamped F tuners that Fender uses on reissue models that have the "70's style" off-set screw tuners fitted as standard. These will not fit original 1969 - 1979 instruments that have offset screw hole tuners - please see KFTNC-3805 for original instruments. Uses the offset 2 screw mount with push in bushings. All mounting hardware is included.