Create extra-large pocket holes with twice the strength as standard pocket holes. The Kreg XL Drill Bit features our easy-set design with etched material-thickness markings on the bit and a sight-window stop collar. For use with the Kreg Pocket-Hole Jig XL to create XL pocket holes in 2x4 (1-1/2"-thick) and 4x4 (3-1/2" thick) materials.