3 on a plate for classical guitar. Nickel plated Hauser pattern plates, with ebony buttons. Standard 35mm spacing between centres. Gear ratio 1:16. Proven and unaltered in look and dimensions for decades. The worm gears and shafts are precision-manufactured and mounted with precisely the correct spacing on a warp-proof baseplate. The bearings are made of extremely glidant material, meaning that all moving components work absolutely free of friction and wear. Tune your guitar easily and precisely. All parts are precision-crafted and surface-finished, the self-locking drive ensures an even, delicate and steady tuning. All string posts are made of high-grade brass ensuring the best possible tuning accuracy and wear resistance.