Grover 309G Mandolin Machines
Grover 309G Mandolin Machines, Machine Heads for Mandolin, Equal length tuning pegs for standard ""A""-style mandolins, 4-On-A-Plate configuration: 4 left / 4 right, Open, Gear ratio 18:1, orm thread above the gear, Mounting diameter with mounting sleeve: 8.25 mm, Shaft distance: 23 mm, Finish: Gold