Precision 20:1 gear ratio Guyker guitar bass tuners fit for Jazz bass or precision electric bass. 
Feature:
- Comfortable and easy for adjustment of string tension.
- Quality open gear bass machine heads.
- Replacement/Upgrade parts for electric bass or precision instruments.
- Smooth and shiny, wear-resistant, anti-corrosion, and dust-proof, quick and accurate tuning.
- Exquisite appearance with perfect workmanship and high-tech finish.
- Provides finer tuning and greater stability.
- Complete with color matched threaded bushings, washers and screws.
Specifications:
- Ratio: Gear Ratio - 1:20
- Style no.: GK-3436
- 3 Colors available: Black, chrome, gold
Package Includes:
- GK3436 bass tuners set (4R, 2R2L or 3R2L for choose)
- Nut, Ferrule, Screws included
Note:
Lubricate the screw threads with cutting lubricant (also wax or a bar of soap) to reduce friction and help them
thread properly.