This item is the 99-033 Wedge Groove Bit with 1-21/32" overall diameter, 5/16" cut depth, 1-3/32" carbide height, 10 degree angle, 1/2" shank diameter, and 2-5/8" overall length.
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 1-21/32-inch, height 1-3/32-inch, shank diameter 1/2-inch.