Item Weight:10.2 ounces Package Dimensions:6.1 x 2.2 x 1.38 inches Body Material:Metal String Material:Nickel Number of Strings:6 Good high end tuners roto -grip locking rotomatic 3x3 can ensure you to play your beloved guitar flexibly and accurately. locks guitar pegheads replacement for electric, folk or acoustic guitars. Featured with sealed machine heads and heavy-duty internal gear, it can turn Smoothly, enabling the player to tune accurately and easily. Feature: - Gear Ratio - 1:21, designed to fit modern 10mm headstock holes. - Comfortable and easy for adjustment of string tension. - Replacement /Upgrade parts for electric or acoustic guitars 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. - Made of zinc alloy material, durable to use. - With heavy duty internal gear. - Provides finer tuning and greater stability. Specifications: - Ratio: Gear Ratio - 1 :21 - 90 degree fixing tag - Style: GK502SP half moon shaped button - 5 Color Available: Nickel, Chrome, Gold, Black, Chameleon RainbowPackage Includes: - 6 x Guitar locking tuners (3R 3L) - 6 x Ferrules - 6 x Threaded Bushings - 6 x Mount Screws About this item Precision 1:21 gear ratio with sealed lubrication, cast housings and metal knobs. < br> Gear Ratio - 1:21, designed to fit modern 10mm headstock peg holes. Comfortable and easy for adjustment of string tension. Half moon shaped button with sealed housing and 90 degree fixing tag. Mounting hardware (screws, bushings and washers) included. Guitar locking tuning machines with heavy duty internal gear, sturdy and convenient. Easy to install, easy to replace your old or dirty guitar tuning pegs. Please check the parameter drawing in the attached pics before placing your order. Precision 1:21 gear ratio with sealed lubrication, cast housings and metal knobs. Gear Ratio - 1:21, designed to fit modern 10mm headstock peg holes. Comfortable and easy for adjustment of string tension. Half moon shaped button with sealed housing and 90 degree fixing tag. Mounting hardware (screws, bushings and washers) included. Guitar locking tuning machines with heavy duty internal gear, sturdy and convenient. Easy to install, easy to replace your old or dirty guitar tuning pegs. Please check the parameter drawing in the attached pics before placing your order.