This sturdy all-metal jig is the most accurate and easy-to-use shelf drilling jig on the market today. The accuracy is derived from two precision drilled hardened steel plates (12 x 1 x 1/2) with 1/4 and 5mm bores 1 apart. Use a handheld electric drill and the 1/4 and 5mm bits supplied in the kit with the drill stops to bore holes into the work piece. Use of the fence will allow you to drill holes at 1 1/4, 1 3/4, and 2 1/4 from the edge. Or make your own woodfence for other spacings. Also supplied are 4 index pins (2 each 1/4 and 5mm diameter), which enable you to drill holes inwork pieces of any length. Complete instructions are provided with the jig.