Kluson has just reissued the Firebird/Banjo tuners in all their original glory! Kluson stayed true to the design in virtually every aspect using planetary gears with the 12:1 ratio (wind rate = to 14.6:1 ratio), the exact mounting screw pattern, housing size and appearance with the 5/16 inch string post. Because these tuners have a larger string post the tuners do require the original larger peg hole which is very similar in size to what is used for modern die-cast tuners.
Button Shaft dims = 5/32 in. (3.97mm) w/ opposing flat sides
Button Screw = 4-48 N.F. tap
String Post Diameter = 5/16 in.
Gear Ratio = 12:1 Planetary
Wind Ratio equivalent = 14.6:1
Mounting Screws = #4 X 1/2 in. Phillips raised head Countersink screw
Bushing Dims = 13/32 in. (10mm) O.D. X 5/16 in I.D.