The "Quadraset™" with its four cutters enables you to cut grooves and dados from 1/8" through 23/32" in increments of 1/32". Tongue and Groove can also be achieved with proper set-up. Fully diagrammed instructions included for both fractional and metric sizes. Complete with four cutters (1/8", 5/32", 3/16", 1/4"), arbor, ball bearing guide, spacers, and shims.