Hex drivers for cordless screwdriver

[tonydevon]

What are they called. Saw a set of 4 at shop. Eds near 20 quid.

Are these available generally ie not just rc tool specific.

What they called

My hands arent great and now Im messing about more actually changing diff oils etc it would help a huge about. Would still run them hom by hand. But be great to speed things up