Package includes: 6 pieces (3*L + 3*R Handed) lock guitar tuners pegs, 6 mounting screws, 6 threaded bushing, and 6 ferrules, good replacement for almost electric or acoustic guitars. Guitar locking tuning machines with heavy duty internal gear, sturdy and convenient. Locking tuners help to provide finer tuning and greater stability. Gear Ratio - 1:18, designed to fit modern 10mm headstock holes. Description: Replacement/Upgrade parts for electric, folk or acoustic guitars or instruments. Gear Ratio - 1:18, designed to fit modern 10mm headstock holes. Hex shaped button with sealed housing and 45 degree fixing tag. and highly reliable for easy, smooth, and precise tuning. Made of solid materials with an elegant and professional look. Easy to install, quick and accurate tuning. With heavy duty internal gear. Provides finer tuning and greater stability. Quality sealed guitar machine heads. Color: Silver Material: Metal Package Contents: (3*L + 3*R Handed Guitar Locking Tuners) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.