WoodRiver® Combination Miter Track and T-Track features a standard 3/4" miter track with bottom T-profile that is used to guide most miter bars with 3/4" x 3/8" sizing so you can make jigs that use a miter gauge or miter bar like router tabletops or table saw sleds. In addition to the standard miter track profile, 1/4" T-Track on top and bottom holds 1/4"-20 bolt heads and nuts so you can add clamping fixtures to your jigs. Durable extruded aluminum combination track is designed to be bolted down to the fixture so there are no pre-drilled holes for a clean uninterrupted surface. Nominal 1/2"-tall profile accommodates either dado or laminated installation.