KREG Pocket-Hole Jig 230 MicroProduct information "Pocket Hole Jig 230 Micro" Like our 500 and 700 Series Pocket Hole Jig Micro Pocket Drill Guide accessories, the KPHJ230 Pocket Hole Jig Micro creates a 33 % smaller pocket hole that works great for smaller projects, thinner stock, and tighter repairs but in a complete stand alone system. The Pocket Hole Jig Micro Jig has the same ease of use and working versatility of our other portable Pocket Hole Jigs. With a twist apart design