About KREG KPHA300 Easy-Set Drill Bit Stepped drill bit for creating pocket holes using a Kreg Pocket-Hole Jig Works with materials from to 1 thick Easy-set etched markings for , , 1 materials Direct replacement for drill bit included with Kreg Pocket-Hole Jig 320, 310 Also works with K5, K4, K3, R3, Mini, and Foreman hex shank works with quick-change drill chucks