Freud® 99-760 Quarter- Round Premier Adjustable Rail and Stile Router Bit Set - 1-11/16" Dia x 1-1/4" H x 1/2" ShankProduce perfect fitting beaded stile and rail doors from 5 8" to 1 1 4" thick! Adjustable shims enable a tight fit when using plywood as thin as 7 32" (5. 5mm), and also allow use with thick panels. To produce the front of a longer tenon profile for blind tenons, through tenons or bridle joints, remove the top portion of the cutter (including bearing and spindle). High density carbide composition and Perma Shield coating lengthen bit life and protect