CMT | 835.001.11 Rabbeting Set, 1/4-Inch Shank, Carbide-Tipped Our CMT carbide tipped Rabbeting Bits Sets, are fast and accurate - you can quickly produce inset doors and drawer fronts, make strong rabbet joints, mill perfect tongue and groove joints, they can even be used as a flush trim or pattern following bit or any number of other jobs. CMT Rabbeting Sets allow you to make a limitless number of cuts by adjusting the cutting height on your router and changing the bearing on the bit. Each set comes complete with one rabbeting bit with 3/8” bearing assembled and six changeable ball bearing guides, which is also sold separately. 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.