Install knobs and pulls with easy, repeatable accuracy. Adjustable guides for accurate hole placement. Built-in measuring scales for repeatable results. Versatile for mounting single and multi-hole knobs. Adjustable edge guide for easy positioning. Strong, lightweight materials for easy handling. Durable hardened-steel drill guides. 2-1/2 In. to 5 In. and 64 mm, 96 mm, 128 mm drill guide spacing. 1 In. to 5 In. edge guide to hole-center spacing. Imperial and Metric measuring scales. Includes jig base, edge guide (2) drill guides with knurled nuts, (2) non-slip pads, (2) T-knobs and bolts, owner's manual.