Waverly F-style Mandolin Machines with Ebony Knobs, Satin silver

Our uncompromising design features patented threaded worm tension bushings that eliminate looseness, for maximum tuning efficiency. The precision-machined stainless steel worm gears, bronze alloy string post gears and 16:1 gear ratio assure smooth, accurate tuning. Performing artists stay in tune with Waverly: "I love Waverly tuners. The keys move with ease and hold b, two important qualities we must have to perform night after night. I have Waverly tuners on all my mandolins. I wouldn't want to use anything else. They are the best!" — Rhonda Vincent Ultra-smooth operation, precise, reliable tuning, long life and classic beauty. Each handsome engraved baseplate is now computer-machined from a single brass billet, for lighter weight with unwavering stability. Standard spacing measures 29/32" (.906") between each string post. String post diameter: .236" Required peghole diameter: 21/64" or .328" Satin silver finish Each set includes: Pair of 4-left, 4-right tuning machines Knurled press-fit brass peghead bushings (8) Mounting screws (10) Installation Tips Peghole spacing: Plate-mounted tuners can't work efficiently if the pegholes are improperly drilled. Our Mandolin Peghead Drill Jig (sold separately) ensures precise 29/32" spacing for accurate alignment. Bushings: Get the right fit! We highly recommend the use of a .328"-diameter bushing reamer to cut a clean, accurate counterbore for a professional job. Mounting screws: Pilot holes required. Installing delicate screws into hard wood requires great care and accuracy. We highly recommend using a 5/64" bit for the pilot hole before installing these screws. Lubricate the screw threads with cutting lubricant (also wax or a bar of soap) to reduce friction and help them thread properly.

Our uncompromising design features patented threaded worm tension bushings that eliminate looseness, for maximum tuning efficiency Ultra-smooth operation, precise, reliable tuning, long life and classic beauty Precision-machined stainless steel worm gears, bronze alloy string post gears and 16:1 gear ratio assure smooth, accurate tuning Lifetime Guarantee Set includes pair of 4-left, 4-right tuning machines, knurled press-fit bushings, and mounting screws