Features: 1. Package includes: 6 pieces (6 for Right Hand) lock guitar tuners pegs, 6 mounting screws, 6 threaded bushing, and 6 ferrules, good replacement for almost electric or acoustic guitars. 2. Guitar locking tuning machines with heavy duty internal gear, sturdy and convenient. 3. Made of zinc alloy material, durable to use. Easy to install, easy to replace your old and dirty guitar tuning pegs. 4. Locking tuners help to provide finer tuning and greater stability. 5. Gear Ratio - 1:18, designed to fit modern 10mm headstock holes. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Replacement/Upgrade parts for electric, folk or acoustic guitars or precision instruments. Gear Ratio - 1:18, designed to fit modern 10mm headstock holes. Hex shaped button with sealed housing and 45 degree fixing tag. Durable 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. includes: 6 x Guitar locking tuners (6R, 6L or 3R3L for choose) 6 x Ferrules 6 x Threaded Bushing 6 x Mount Screws