Guyker 509A-SP CNC Aluminum Locking Guitar Tuners 3R+3L 1:21

Key Features: CNC aluminum alloy housing provides lightweight, durable, and corrosion-resistant construction Brass gear components support reliable wear resistance and smooth tuning operation Large wing-style tuner buttons offer a distinct grip and appearance compared with the 504A-SP style Locking tuner structure helps make restringing faster and secures the string more firmly 3R+3L configuration fits guitar headstocks with a three-per-side tuner layout Screw-in hex head bushing and single mounting tab support stable installation Available in Black and Silver finishes Specifications: Material: CNC Aluminum Alloy, Brass Gear Color: Black, Silver Array: 3R+3L Gear Ratio: 1:21 Peg Hole Requirement: 10 mm String Post Diameter: 6 mm Max. String Gauge: 1.8 mm String Thru Hole Center Height: 22.5mm Overall Length: 42 mm Body Height: 27.4 mm Body Width: 16 mm Button Size: 27.7 mm Mounting Tab Hole Diameter: 2.6 mm Mounting Tab Center Height: 10.5 mm Bushing Type: Screw-in Hex Head Weight: 29 g per piece / 174 g per set Suitable For: Guitar with 3R+3L tuner layout Package Includes: 1 set of guitar tuning machines (3R+3L) Matching threaded bushings Matching washers Fitment Note / Warm Reminder: Suitable for guitars using a 3R+3L tuner layout Please verify your peg hole size, string post diameter, mounting tab position, tuner footprint, and button clearance before ordering For replacement projects, compare your original tuner measurements with the technical drawing to ensure proper fit