This is Mascot Precision Tools 841 Spiral drill. A much smaller version of a drill used for over a century. The simple push down handle smoothly rotates the shaft and turns the drill. Spring action pushes the handle back up and its ready to go again! You'll be amized at how effortless this drill is to use. Length is 7-3/4 with a drill capacity of 0 to 1.0mm.
