Electro-File The Electro-FileTM is ideal for a variety of light duty cutting, shaping, filing and finishing tasks. Reciprocal in-line motion allows you to saw, sand or file in tight precise areas. A unique internal balancing mechanism allows for a smooth and fully utilized working stroke to perform delicate operations at any place along the cutting edge without bracing the tool against the work piece. This makes it possible to do controlled cuts in the middle of a work piece, cutting sharp corners in recesses or sanding flat surfaces. Specially designed chuck allows for the use of 1/8" or 1/16" diameter round shank (needle files/rasps) or flat shank (saw blade) attachments interchangeably. No other tool on the market provides this feature for its user’s flexibility. The Electro-FileTM is an excellent supplement to rotary tools. Used by professionals, model makers, and hobbyists as an indispensable addition to their workshop.