Guyker GB530T Open Gear Bass Tuning Machines 1:28 Ratio Carbon Fiber

Key Features: 1:22 gear ratio for precise and controlled tuning adjustment Carbon fiber and aluminum alloy construction with visible copper gear design Open-gear, non-locking bass tuner structure for replacement and upgrade projects Available in multiple layout options: 4R, 4L, and 2R+2L Clover-style tuner keys with a modern carbon fiber appearance Includes matching bushings and mounting screws for installation Designed for 4-string bass applications with measurement-based fitment Practical upgrade option for basses that match the shown mounting pattern and peg hole size Specifications: Array: 2R+2L / 4R / 4L / 1R / 1L Gear Ratio: 1:28 Material: Carbon fiber, aluminum alloy, copper gear Type: Open-gear, non-locking bass tuning machines Suitable For: 4-string bass Color: Gold / Chrome / Black Overall Length: 100 mm Backplate Size: 48.3 x 46.7 mm Upper Mounting Hole Spacing: 28.9 mm Lower Mounting Hole Spacing: 25.6 mm Vertical Mounting Hole Spacing: 37.8 mm Main Shaft Diameter: 14 mm String Slot Width: 4 mm String Post-Overall Height: 31.7 mm Top Cap Height: 10.8 mm Bushing Size: 21 mm flange OD / 18.7 mm body OD / 9 mm height Bushing Type: Press-in flanged bushing Package Includes: 4 x bass tuning machines 4 x bushings Mounting screws Fitment Note / Warm Reminder: Please confirm your required layout option (4R, 4L, or 2R+2L) before ordering. Also verify your bass has 14 mm peg holes and matching mounting hole spacing and backplate dimensions. Compatibility is measurement-based, so please compare the full size diagram with your original hardware carefully. Size Picture