Nitto Kohki ASH-900 Reciprocating File

Super efficient way of easyfiling, polishing and finishing
SUPER HAND replaces work.
SUPER HAND is ultra-small, ultra-lightweight; yet performs with the power and efficiency of a much larger tool to meet user requirements of filling, chamfering and other jobs.
It comes with the quick-change tool points for different jobs. You can work on steel, glass, brass, aluminium, wood and other materials silently. It also handles scores of big jobs with speed and ease.