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Gotoh® GB640 open back res-o-lite bass tuning machines with 11/16'' (17.6mm) press-fit bushings. Black with metal cloverleaf ('elephant ear') buttons. Super lightweight to prevent neck dive, each tuner weighs only 67 grams. Set of 4L.
| Specifications | inches | mm |
|---|---|---|
| Bushing OD / Peg hole requirement | 11/16'' | 17.6mm |
| String post height | 31.2mm | |
| Mounting screw hole spacing | 29mm x 38.2mm x 26mm | |
| Gear ratio | 28:1 | |