CMT 859.564.11 Ogee Bit, 1/2-Inch Shank, 1/4-Inch Radius, Carbide-Tipped
Series 859 bits can be converted to series 860 by changing the bearing to 3/8. 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.