By far the best boring machine ever made. The only machine I will ever use! MILLERS FALLS machines employ a solid four-legged steel frame as opposed to a sloppy two-legged wood frame. This one is as smooth as the day it was made, 100% complete, and ready to use. Accepts any standard 1/2″ shank boring machine bit, which we have listed separately. This machine has been somewhat cleaned and thoroughly inspected , along with a copy of the original label added to the deck. It has a depth stop for perfectly even mortise bottoms. Just push your hands to the left while turning and the bit is automatically withdrawn.