B07T9FLRQ7 Grover Roto-Grip Locking Rotomatics (505F Series) 6-In-Line Tuners, Gold

18:1 gear ratio for precise tuning
Locking string posts
Cast gear housings with no-hassle lifetime sealed lubrication
Traditional mini Rotomatic removable metal knobs
Set of 6 includes mounting screws and round vintage-style press-fit peghead bushings