This compact jig makes adding shelf support holes to new or existing furniture easy. It has six hardened steel bushings set 32mm apart, and a dual position fence for drilling with a 1" or 2" offset from an edge. You can also remove the fence and clamp the jig in position for custom offsets or drilling next to a cabinet back. Each jig includes a 1/4" or a 5mm brad-point drill bit with an adjustable depth stop collar, a locating pin (to ensure consistent hole spacing when extending an existing row of pin holes) and a bracket to let you connect multiple jigs for production work. The 5mm bit is stepped with a 1/4" upper section to fit the 1/4" bushings of the jig. The locating pin and up to two bits can be stored neatly in slots on the underside of the jig. The bits are also available separately. Measures 4" wide by 7 1/2" long, made from high-impact ABS plastic. An easy, precise and economical way to add new shelf positions to furniture. To let you hang a single shelf right away, each jig includes four paddle supports with pin diameters matching the jig's drill bit.