This is a NEW set of Grover 102-18G Rotomatic 18:1 Ratio, 3 per Side Tuners, Gold finish. Reliable, professional tuners, ideal replacement for stock tuners, providing better accuracy for tuning.

18:1 Gear Ratio
For 3+3 Style Headstocks
Chrome Finish
Precision Cut Worm and Gear
Includes Washers, Bushings and Wood Screws

Many of the Grover tuners will fit the existing holes in the headstock without any modification at all. Sometimes the existing holes need to be enlarged a bit in order for the tuners to fit properly. Use the index below to find the exact drill bit needed for each tuner series.
(*NOTE: always enlarge the hole size from the front, or face, of the headstock.)

MODEL - SIZE

102 - 25/64"
106 - 25/64"
109 - 25/64"
115 - 21/64"
116 - 23/64"
117 - 21/64"
118 - 21/64"
121 - 3/8"
122 - 3/8"
124 - 3/8"
133 - 23/64"

135 - 25/64"
136 - 25/64"
138 - 23/64"
142 - 45/64"
144 - 35/64"
150 - 25/64"
162 - 11/32"
205 - 25/64"
303 - 25/64"
306 - 25/64"
308 - 21/64"

406 - 25/64"
H97 - 15/64"
V97 - 23/64"
H98 - 15/64"
V98 - 23/64"
2 - 21/64"
4 - 5/16"
5 - 11/32"
25 - 11/32"
75 - 11/32"
85 - 11/32"