Features:Professional 3L3R Guitar Tuning Pegs Tuners Machine Heads.Well-designed for world famous guitar.Easy to use.Suitable for acoustic steel string bass.The tuning machines turn smoothly enabling the player to tune accurately and easily.Descriptions:Enclosed Chrome Tuning Pegs Machine Head, ensuring durability.With Heavy duty internal gear.Sealed tuning pegs style, with 6 screws.Specifications:Material:MetalColor: SilverType: 3 Left, 3 RightHole Diameter: 6mmPackage include:6 x Guitar machine heads(3left, 3 right)6 x Threaded bushing6 x Ferrules6 x Small screwsNotes:1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2.Please allow slight deviation for the measurement data.