T-Handle hex driver. This is an elegant drive system that accepts hex bits in either the long leg of the T, or in either of the handle ends, if you want increased torque, or just as a convenient place to store bits. All three hex sockets have a magnet in it, to retain bits.
The T-Handle design makes this much nicer to use than a screwdriver style hex driver.
Does NOT include torque limiter, shown for illustration only.