Wera 05008840001 335 Stubby/Carburetor Screwdriver 0,6 x 3,5 x 25 mm

This screwdriver fits into the test point for vaillant boilers precisely which is what got for.

The head of the 8 x 1.2 stubby is actually only 7mm by 1mm, which is a little disappointing given the general quality of the Wera tools.

Snapped first time I used it. Trying to unscrew a part on my carbs. Don’t bother buying