imbus screws for ball bearings mounting
M3x8 screw is recommended, among others for profile router bits FT911-2208-0001, FT911-3408-0001, FT911-5312-0001, FT911-8812-0001
possibility of mounting bearings in other cutters from the FT group
high quality screw accessories / standards for mounting ball bearings in shank cutters from the FT group