The Freud Reversible Wainscoting Bit is used for milling matching joints in wainscoting. Works with stock from 1?2" to 5?8" thick, and mills matching frame joints with remarkable ease and precision. Bit height on the Freud Reversible Wainscoting Bit is set one time for male and female joints without requiring fence or height adjustments. Just rout stiles face down and rails face up for a perfect fit. Versatile design-after routing the matching profiles, rout a rabbet on the back to accept the tongue of a raised panel in 3?4" stock.