From the Manufacturer
Top of line 2-Piece set. 3 flute, carbide tipped with totally enclosed ball bearing guides. The double 1/4-Inch cutter makes the tongue and the single 1/4-Inch slot cutter cuts the groove, 1/2-Inch shank. Premium Katana router bits equal or exceed any on the market. We support your woodworking efforts by providing the safest tools available made with the best materials, using no design shortcuts. Katana router bits are turned on multi-axis CNC grinders, using the highest quality steels. They’re designed for years of safe, precise, reliable performance
3 flute, micrograin carbide-tipped with totally enclosed ball bearing guides. The double 1/4? cutter makes the tongue, and the single 1/4? slot cutter cuts the groove. 1-7/8″ Large Diameter. 3/4″ Cut Height. 1/2″ Cut Depth. 1/2″ Shank.