The largest and strongest of the Yankee Spiral Screw Drivers, later Stanley model shows only the slightest use and works smoothly. The model is the “quick return” one having a strong spring for rapid and powerful driving of large screws in tough wood. Closed, it is 16 ˝ inches long, sans bit, and opens to 26”. Four bits are included—3 sizes of flat bits and one Phillips bit. Fine