Precisely aligned guides for 1/4'' , 5/16'' and 3/8'' holes. Handles stock ranging from 1/2'' to 1-1/2'' , includes precise depth stops for 1/4'' , 5/16'' and 3/8'' drill bits. An assortment of dowel pins is included with the jig. Aluminum. -- (Category: Dowels, Plugs and Dowel Pins)