The Yonico 16249 Reversible crown molding router bit set can create 3 different crown moldings using your choice of bit combinations. Choose one profile for the bottom of the crown then flip the stock and repeat or swap the bit to create a more elaborate profile. Fence depth adjustments are not necessary as both bits have the same top edge width. (Minor sanding might be required.) any combination of profiles you choose can create a crown greater than 6″ High. To achieve the best results use stock at least 5 inches high. 1/2″ Shanks.