The dremel motor tool,  and accouterments!

How is this not listed first?  The motor tool works by speed not torque like a conventional drill does, however the motor tools high speed is adjustable to suit, often on the tool itself or using a rheostat power cable.  Capable of a large number of specialist tools that can be spun by the drill motor,  attachments include not just bits but flex shaft wants, presses, saws, sanders and a bewildering variety of cutters, disks and bits.