Grover 309FN F-Style 4 x 4 Mandolin Tuners

These new Grover 309FN, professional model mandolin machine heads are the latest in technology. A specially designed, adjustable worm gear along with the die cast base maintains the center lines of the gear and worm to insure correct alignment for the finest mandolin tuning possible. The worm to gear ratio for the 309FN is 18:1. Screws and bushings are provided. Grover proudly stands behind their machine heads with the following lifetime warranty ... should your Grover tuners ever fail, for any reason, simply return them to us for a fast and friendly no charge repair or replacement. Features: Gear ratio: 18:1 Chrome Finish Screws and bushings are provided Worm and gear are precision-cut for perfect mesh Housings are self-lubricating Model # 309FN Lifetime Warranty Shipped insured Brand New Price: $69.00 Normally Ships Within 1-2 Days.