Many Electricians and Plumbers rely on Milwaukee's Selfeed Bits for large hole drilling in wood. The inside cutting plane shaves the hole radius for clean smooth holes without pressure. A removable, replaceable feed screw draws the bit into the gummiest of woods effortlessly. A hex shank provides a secure gripping surface for the drill chuck. The bit is coated with a rust inhibitor. Use Feed Screw 48-28-6870, Socket Wrench 49-96-0060 and Set Screw 06-83-2625 on diameters less than 3". One per package. Milwaukee's Selfeed Bits for large hole drilling in wood Highlights: 1-1/4" bit diameter 7/16" hex shank Removable and replaceable feed screw Cutting edges can be resharpened In clamshell packaging