Grover 409N Mandolin Machines
Grover 409N Mandolin Machines, machine heads for mandolin, tuning pegs with same lengths for standard ""A""-style mandolins, open, specially designed worm gear, 8 pieces: 4x left, 4x right, 4-on-a-plate design, ratio: 18:1, mounting sleeve diameter: 8.30 mm, shaft distance: 23 mm, nickel finish