Aluminum T-Track Regular and T-Track PLUS for general purpose Jig & Fixture applications on work benches, drill presses, router tables, sliding platforms, fences, etc. T-Slot captures a standard 1/4" nut or 1/4" bolt head for attaching Stops, Clamps, Hold-Downs, Guards, and just about any other commonly used jig or fixture component. Can be flush mounted in a groove, or mounted directly to the surface of your application using the included #8 wood screws. Mounting groove dimensions are 1/2" deep by 3/4" wide for T-Track Regular and 1/2" deep by 1 1/4" wide for T-Track PLUS. In addition to the T-Slot on the T-Track Regular, the T-Track PLUS includes a highly accurate sliding Lexan scale that can be "zeroed" to any reference position. Gold anodized for durability and beauty. Available in 18", 24", 36" and 48" lengths.