It's a standard 1/4" bit holder.
It's simply a magnet. There is one in each nut driver in the set.
Hi, BRB70. The bits are made overseas.
There are adapters for either a 1/4" or 3/8" sockets.
No
Probably not. It's maximum 3/8" drive adapter.
The bit holder is magnetic so that each of the screwdriver bits become magnetic when used with the holder. the 3/8" and 1/4" socket adapters are not magnetic.
i would guess so and free if u order over $45 worth of stuff