Waverly Guitar Tuners with Ivoroid Knobs for Solid Pegheads - StewMac
Ivoroid Tuner Buttons for Gotoh 510 and Bone Saddle Blanks | Reverb
Tuning Button, Ivoroid – Sullivan Banjo Co. * DC Calls
Amazon.com: Gotoh Classical Guitar Machine Heads (Bonus ALS Fret Polishing Kit) 35G1800-2M Model Tuners by Gotoh Japan Solid Brass with Ivoroid Buttons - Fret Polishing Kit by Australian Luthier Supplies : Musical