Made from special carbon steel, these excellent-quality chisel-and-bit sets from Japan are attractively priced. The chisel bodies, accurately ground and hardened to Rc47-51, have polished outside faces and smoothly machined inner bevels. Designed for efficient chip ejection, the drill bits have well-ground cutting tips and spurs, and are extra long (between 8 3/4" and 11" overall) for compatibility with a variety of mortisers. Although the lower sections of the drills are Rc50-54, the shanks are soft enough to be easily docked if required (instructions included).
For easy maintenance, we offer a pair of diamond sharpeners (available separately), one for the basic grind and the other to put a micro-bevel on the chisel corners. This set is specially designed to match the size range and geometry of this series of chisels.
Shank diameters of the drill bits range from 11/64" (4.4mm) for the 1/4" bit to 1/2" (12.7mm) for the 1" bit. Sizes from 1/4" to 5/8" have 5/8" shanks, while those 3/4" and larger have 3/4" shanks. Please double-check your mortiser's capacity before ordering.