The small end caps used for these mini screwdrivers can further increase the torque. This is a very basic design, but it works well. It uses very little material - it's perfect for using up leftover consumables and threads.

It is recommended to use PETG for printing, but PLA is also suitable. Personally, I printed this product with matte PLA.

These adapters fit more tightly, which can effectively prevent the screwdriver from slipping out during use

This model is specifically designed for screwdrivers with an edge spacing of approximately 7.3 millimeters:
 

If your mini screwdriver has a different hexagonal size, you can also freely resize this model according to the actual size!