CMT 800.616.11 Box Joint Bit, 1-7/8-Inch Diameter, 1/2-Inch Shank

Features
This router allows you to carry out accurate and functional finger joints in a much easier way. Without any adjustment you will be able to work woods with different thicknesses as indicated in the drawing. The bearing allows you to reach a 9,5 mm (3/8") cutting depth. For further cutting depths you need to use a fence. 
CMT orange router bits have been rated the #1 overall router bits compared to other brands (Wood Magazine).  CMT orange router bits utilize the highest quality bar stock sourced from Switzerland.  Premium grade sinterhip hi-density industrial chrome carbide helps prevent material failure and increase cutting life.  And finallly, a non-stick orange shield coating prevents heat buildup and corrosion providing for longer router bit life.