The Easy-Set Pocket-Hole Drill Bit is the same 3/8"-diameter stepped bit that comes with Kreg 300-Series Pocket-Hole Jigs. If you have a worn bit, or if you want to add another bit to your pocket-hole tool collection, this is the perfect choice. This bit works with materials from 1/2" to 1-1/2" thick, and features engraved markings for 1/2", 3/4", and 1-1/2" materials to match up with the Easy-Set Stop Collar. A 1/4" hex shank fits standard quick-change chucks. Compatible with all Kreg Pocket-Hole Jigs.