The CMT 850 series keyhole bits are available in either 1/4 inch or 1.2 inch shank. With the CMT keyhole bit you can make holes that keep your frames, plaques or any wall hanging perfectly straight and attached to the wall. The bit bores a 3/8″ entry hole in the wood, then proceeds to cut a 4,8mm (3/16″) slot and finishes by boring a larger 3/8″ x 3/16″ opening under the surface. The perfect way to securely mount wall hangings on screws and nails.

• 850.001.11 – 3/8D X 7/16L X 1/4 SHANK
• 850.501.11 – 3/8D X 7/16L X 1/2 SHANK