Inserts for almost all mechanics on the market

Among all mechanism manufacturers there are a handful of different shaft sizes. It is therefore important that the buttons have an exact insert to ensure an exact fit on the shaft of the respective mechanism.

We at Guitar Monkey therefore offer a total of 3 different inserts in order to offer our buttons for almost all mechanics on the market.

ATTENTION: Please measure the shaft of your mechanics before buying to be on the safe side. If you are unsure, contact us and we will be happy to help you. Our inserts do not fit all guitar mechanics on the market, only those listed below.

  • Insert 1 - Gotoh

    Our Insert 1 fits all Gotoh tuners or tuners made by Gotoh for other manufacturers:

    - Gotoh mechanics

    - PRS Phase III

    - Taylor tuners by Gotoh

    - Ibanez tuners by Gotoh

  • Insert 2 - Schaller

    Our Insert 2 fits all Schaller tuners or tuners made by Schaller for other manufacturers:

    - Schaller machine heads

    - PRS Phase I by Schaller

    - PRS Phase II by Schaller

  • Insert 3 - Multi Fit

    Our Insert 3 fits many of the following mechanics as they all use the same shaft:

    - Grover mechanics

    - Gibson machine heads

    - Fender locking mechanics

    - PRS SE (only from BJ 2010-2022)

    - Hipshot mechanics

    - Graph Tech mechanics

    - KLUSON Germany mechanics

    - Daddario mechanics

    - Solar Guitar machine heads

Technical drawings

To ensure that you buy 100% the right buttons for your mechanics, we recommend that you take a look at our technical drawings and measure the exact dimensions before you buy our buttons.

Big German Wood (ebony/tamarind wood)

Click here for the complete technical drawing

Small German Wood (ebony/tamarind wood)

Click here for the complete technical drawing

Vintage Kidney Wood (ebony/tamarind wood)

Click here for the complete technical drawing

weight comparison

Save weight with our wooden buttons

The following table shows the different weights of the different Guitar Monkey buttons. It becomes clear that an enormous weight saving is possible, especially with the wooden buttons.

If, for example, the German Big Metal Buttons are replaced by German Big Wood Buttons (ebony or tamarind wood), the weight can be reduced from 228g by 48g to 180g Reduce per set of 6. That corresponds to a weight saving of over 21%!



Button Hardware

Mechanics total/

Total tuner

6 String Set

Big German Metal


4g 38g 228g

Small German Metal


4g 35g 210g

Vintage Kidney Wood

≈ 2.5g *

4g 30.5g 183g

Big German Wood

≈ 2g *

4g 30g 180g

Small German Wood

≈ 2g *

4g 29.5g


* Weight and color may vary slightly as wood is a natural product

size comparison

  • Specify all dimensions in millimeters (mm).

    Wood = ebony or tamarind wood