Product Description Freud?s Mortising Bits are designed with deep center gullets for maximum material removal without chip loading. 1-1/4" Overall Dia (D), 1/2" Carbide Height (h), 1/2" Shank, 2-3/8" Overall Length (H) Ideal For: Mortising hinges & hardware; dadoes. Application: Down shear works to eliminate splintering ideal for hinges, mortises, and dadoes. Made In Italy. From the Manufacturer Freud's precision ground carbide bits have a grain size smaller than other grades, and titanium is added making them impervious to chemical attack. Promoting safer woodworking is the reason Freud made a commitment to develop anti-kickback router bits. Bits are computer balanced to insure vibration-free operation at speeds that are a safe margin above the typical 22,000 RPMs of most routers. Freud's philosophy is woodworkers should expect safety, not pay for it. Over all diameter 1-1/4-inch, shank diameter 1/2-inch.