gears guitar tuning machines

The listings show multiple gear ratios across different sets, mainly 19:1, 18:1 and 15:1 depending on the model.

Some sets include rear locking knobs (locking rear mechanisms) designed to secure strings and improve tuning stability.

Listings mention staggered-height posts, which remove the need for a string tree, and individually mounted posts, which are described as helping to reduce issues associated with neck stress or warping.

Button options include pearloid keystone, oval and keystone shapes; finishes noted in listings include nickel and gold plating.

Some sets include mounting screws, washers and bushings—examples specify 8.8 mm bushings and a 25/64" peg‑hole size along with the listed mounting hardware.

Sealed die-cast housings are described as protecting the gears from contamination, which helps ensure smooth, precise tuning and reduces backlash or slipping.

Some listings describe complete 3+3 (bass and treble) sets that include mounting screws and bushings (for example, 8.8 mm) and are presented as drop‑in, ready‑to‑install kits.