Features: Crafted from durability metal alloys with an oval small head design, these 4 string guitar tuning pegs ensures precise tuning stability and long lasting performances for ukuleles and bass guitars. The transparent plastic cover reveals internal mechanics while protective bushings and included installation screws enable simple setup, maintaining instrument integrity during string changes. Ideal for musicians, luthiers, and hobbyists requiring reliability replacement parts for headstocks or vintage instrument restoration projects. Perfect for backstages quick tuning adjustments, studio recording, or home practice setups where smooth gear operations and visual aesthetics matter. Engineered with 2R2L configuration compatibility, these machine heads feature anti slip knurling and 18 1 gear ratio for adjustments, reducing string breakage during intense performances. Specifications: Dimension:29x22x40cm/1.14×0.87×1.57in Component:Metal/Plastic Package Includes: 4pcs Guitar Tuning Pegs note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.