This bit represents the mirror image of the traditional Roman ogee bit, but it also adds a sharp defining detail to the edges of cabinets and furniture before rolling into a smooth convex shape. Bit is equipped with 2 Hi-Density carbide-tipped cutting edges for long-lasting cutting performance, features anti-kickback design to control the depth of cut and PTFE-coating to prevent pitch and resin build-ups. Equipped with a bearing for easy template work. CMT orange bits have been rated the #1 overall router bits compared to other brands (Wood Magazine). From the Manufacturer Series 860 bits can be converted to series 859 by changing the bearing to 1/2. Important: always assemble the black bearing heat shield with the raised side up when changing the bearing. Improper assembly will cause the screw to come loose and the bearing to fall off when working.