CMT-800.627.11 - TENON CUTTING SETCMTs tenon cutting router bit will produce perfectly fitting tenons in every board you cut, even if the boards vary slightly in thickness. Simply set the distance between the cutters using the included spacers, and you can easily cut tenons from 3 16 in. to 3 8 in. thick, up to 1 1 16 in. long. This simple to use router bit takes the mystery out of achieving the excellent tenon to mortise fit required for high quality joinery. his bit features super