Features: 3X3 Guitar Tuning Pegs Locking Tuners Tuning Machine Heads Chrome You have no more worries as to how have to pack for the handling guitar, piano small knock a small touch button and let the strings out of tune! The guitar will not off key if you lock the screw post when tune the guitar properly. Description: Material: material + steel gear Gear ratio: 18:1 Colour: Chrome Silver Included: 6 x Guitar machine head 6 x Ferrule 6 x Threaded bushing 6 x screw