Features: Fully enclosed guitar tuning pegs deliver dustproofed and waterproofed protecting while ensuring precise pitches control through high precisions 18 1 gear ratio mechanics for professional grade tuning stability. Crafted with corrosions resistant zincs alloys gears and durability ABS housing, these machine heads feature standardized mounting holes (10mm shaft diameter) for effortless retrofitting on most electric/acoustic guitars. Ideal for musicians, guitar technicians, and craft enthusiasts seeking reliability replacement tuning keys that maintain instrument integrity across climate variations. Performs flawlessly during live performances, studio recordings, outdoor gigs, or humid practice environments thanks to sealed bearing protecting against moisture and debris ingress. Upgrade your axes aesthetics with multiple metallic finish options (/black/gold) that complement guitar hardware while providing smooth 360 rotation under 25N·cm tension. Specifications: Dimension:9×8×5cm/3.54×3.14×1.96in Component:ABS+metal Package Includes: 1Set 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.