The Kreg Jig (K4) is the perfect choice for do-it-yourselfers and anyone new to Kreg Joinery. Whether you're building your first set of garage storage shelves or making simple repairs around the house, the Kreg Jig can help you finish the job in less time, and with far less effort than you ever thought possible. Its simple design gives you the confidence to start the project, and with joints as easy as "Drill. Drive. Done!", you'll actually want to finish it. Kreg Joinery: No Glue or Complicated Math Required The Kreg Jig takes advantage of a technique called Kreg Joinery. Unlike other techniques, Kreg Joinery requires no glue, no complicated math, and no small army of clamps to make wood joints that will last. With Kreg Joinery, you can finish projects in hours instead of days. You won't spend any time clamping, waiting for glue to dry, or wading through complicated math. It essentially involves drilling a hole at an angle into one workpiece, and connecting it to another workpiece with a self-tapping screw.