Graph Tech PRU-4004-BK Ratio Ukulele Tuners Black

The PRU-4004-BK is a set of RATIO Machine Heads for ukuleles that use 4 tuners. These ukulele machine heads are a perfect fit for all types of ukuleles including the Soprano type.

OR

h m s

free-shipping-icon
In Stock!
Remove one item Add one item

Compare

Compare! Here are all the serial numbers of this model we have in stock. Compare them all and select your favorite!

    2 Day Shipping Icon

    Fast & Free Shipping

    Did you know AMS is the only music distributor with four distribution centers? And that means we can offer super-fast shipping on all your music products. Whether you don’t want the spark of inspiration to fade or you really need that replacement speaker before the next show, we have you covered anywhere in the U.S. And even better, it’s FREE!

    45 Day return icon

    45 Day return

    Sometimes the gear on the computer screen seems like a better fit than when you actually get your hands on it. We understand, and that’s why AMS offers an industry-leading 45-day money-back guarantee. If you’re not happy with an item, you have a full month and a half to send it back! We don’t want to just sell you gear. We want to sell you the RIGHT gear — even if it takes a few tries.

    AMS Agent

    Have questions? 
    Talk to a sales specialist!

    800-319-9043

    Graph Tech’s Ratio Tune-a-Lele Ukulele Tuners in black.


    This super light, yet strong machine head makes ukes balanced, not headstock heavy, and with zero backlash makes tuning so much easier.


    Graph Tech PRU-4004-BK Ratio Ukulele Tuners Features:

    • RATIO patented gear technology
    • RATIO - Calibrated Machine Heads incorporate different string gauges into the tuning equation.
    • Tune-a-Lele Ukulele tuners are the world's lightest machine heads, with a uke friendly 6:1 gear ratio!
    • Includes 4 machine heads, mounting screws and bushings
    Shop Similar Models

    Graph Tech PRU-4004-BK Ratio Ukulele Tuners Black Specifications

    Graph Tech PRU-4004-BK Ratio Ukulele Tuners Black Specifications
    Product Specifications

    Graph Tech PRU-4004-BK Ratio Ukulele Tuners Specifications:

    • Gear ratio: 6:1
    • Peg holes diameter required: 0.236" (6mm)
    • String post diameter: 0.232" (5.9mm)
    • Bushings diameter: 0.344" (8.75mm)
    • String post length to string hole: 0.732” (18.6mm)
    • Weight per single machine head: 0.011 lbs (5g)
    • Weight per set of six: 0.044 lbs (20g)
    • String diameter: up to 50 gauge (up to 1.3mm diameter)
    • Includes: 4 machine heads, mounting screws and bushings
    Copyright © 1996-2026 American Musical Supply, Inc. All rights reserved