The Kreg KMA3232 Shelf Pin Jig is a precision woodworking tool designed to create perfectly spaced 5mm holes for adjustable shelving in cabinets and bookshelves. Featuring six hardened-steel drill guides centered on industry-standard 32mm spacing, it ensures level and wobble-free results. The 7-piece kit includes the shelf pin jig assembly, a 5mm brad-point drill bit, an indexing pin, a depth stop collar, a hex wrench, and a set screw, along with four 5mm shelf pins. Its dual-position, removable fence allows for easy alignment against workpiece edges, while the snap-together design enables the connection of multiple jigs for longer drilling runs. Additionally, molded-in alignment marks assist in the installation of concealed hinges and drawer slides in frameless cabinets