Made to fit your own Bernina T10 Screwdriver that came with your new Bernina (Part #030475.51.00).

Gives you a better grip, but not too much grip. (Be Careful to not over tighten)

When installing it will be a tight fit, make sure you line up the hex on the driver and the hex on the driver handle.

Pictures of Bernina T10 Screwdriver are for reference only.

This does not come with a T10 Driver, you can use the one you got with your machine or buy one from your Bernina Dealer.