The POWERTEC 71169 Universal T-Track 48-Inch with 2 Hold-Down Clamps (5-1/2 in. L x 1-1/8 in. W) is your must have t-track set when you want to optimize your jig/fixture setup. With its precision-machined stepped design, our choice t-track (a generous 48" L) accommodates 1/4 in. and 5/16 in. T-bolts, and 1/4 in. hex bolts. 2 premium, lever-shaped hold-down clamps, working in conjunction with the track, provide a dependable, high-tension grip on workpieces up to 2-1/2 in., to maximize worker safety, control and accuracy. Furthermore, the unique lever-profile of the clamps allow for maximum stock clearance. Clamps are easily adjusted and tightened via a handy 5-star knob. The clamp faces are rubber coated to ensure a rugged yet non-marring grip, making these convenient accessories especially suitable for use with soft or prefinished wood stock. Both T-track and clamps feature an aluminum build for long-lasting durability. Simple to install and easy to use. Great for routers, CNCs, drill presses, saws and all your assemblies and jigs. Precision-machined 3-1/2 in. x 5/16 in. T-bolts and washers included for your convenience. Material: Multi-Surface.