Freud 16-108 1-1/4-Inch Diameter by 1/2-Inch Mortising Router Bit
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.