Compatible with any classical, electric, acoustic, bass guitars and ukuleles. If you find any incompatibility, feel free to send feedback so I can create a new size for you in a short time ;)

It is also compatible with most drills on the market, featuring a standard 6.3 mm hex shaft (flat-to-flat), the same as standard hex drill bits.

The model includes custom supports for maximum print stability, reduced print time, and better overall quality. Support-free versions are also available in the STL & CAD files section.

Just print it in 15 minutes, remove the support material, place it in your drill & Enjoy fast string changing!

Update Date: 01/01/26

1- 2 Different Size options:

Two peg socket sizes are included for wider compatibility: 35 × 9.5 × 25 mm and 25 × 9.5 × 16 mm.
One size is designed for instruments ranging from guitars to ukuleles, while the larger one fits bigger pegs. This makes the overall design more versatile and compatible with a wider range of instruments.

If you are looking for hand-winding, I have a great model for that too: 

[https://makerworld.com/en/models/1705299-string-winder-v2#profileId-1808863](https://makerworld.com/en/models/1705299-string-winder-v2#profileId-1808863)

If you want to cut the older strings for quicker string change, there is one more: 

[https://makerworld.com/en/models/2183590-string-winder-cutter#profileId-2370035](https://makerworld.com/en/models/2183590-string-winder-cutter#profileId-2370035)

You can also check out other guitar accecories on my collection:

[https://makerworld.com/en/collections/1897657-guitar-accessories-by-ozan](https://makerworld.com/en/collections/1897657-guitar-accessories-by-ozan)