Introducing the 48 Aluminum T-track by POWERTEC. This heavy duty T-Track is designed to work with an assortment of general purpose fixture and jig applications. In addition to a multitude of unique enhancements, it features an extruded anodized aluminum construction, delivering a solid and durable design. An extruded line, in the bottom of the track, provides for easy and precise alignment when mounting. Unlike other brands, it s delivered to you unblemished, with a smooth and straight profile, and without the structural flaws that may affect your project goals. Whether you re utilizing metal or woodworking machines, this t-track gives you consistently reliable and highly accurate results. PLEASE NOTE: This t-track is exclusively designed to capture ONLY the following type & size bolts: Any Standard 1/4 20 Hex Bolt Unlimited Applications Jigs Fences Fixtures Drill Presses Work Benches Router Tables Sliding platforms and more! Product Specifications: Finish: Anodized Aluminum (Silver) T-Slot Mounting Groove Dimensions: 3/4 deep by 1/2 wide Mounting Holes: 16 3/16 Holes: 1-1/2 from each end then every 3 inches Hole: #8 wood screw (not included) POWERTEC is a US based manufacturer of high quality woodworking machines, wood work accessories, and a wide assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the best innovations, technologies, and product development to the industry.