Perfect for do-it-yourselfers and any new to Kreg Joinery. Removable drill guide for benchtop and portable use. For use with materials from 1/2 In. to 1-1/2 In. thick. Wood-chip relief holes keep the drill bit clear of excess wood chips. Hardened-steel Kreg drill guides feature a lifetime warranty. Includes Kreg Jig K4, stepped drill bit, 6 In. square driver, starter Kreg Screw set, pocket-hole plug set, owner's manual.