The 3-bit Ogee door router bit set can cut rails and styles between 1-3/4" and 1-3/8" thick. The cutting depth is 0.5 inch and the shank diameter is 0.5 inch. Create extra strong entry and passage doors with the extended tenon entry door router bit set. Apart from the standard rails and style bits in all door sets with entry doors, this set comes with an additional attachment that allows you to create larger tenths and then tackle the profile that matches the style. These bits are very large and robust. Stable setup is highly recommended.