Specifications: Material: High-quality 6063 Aluminum Alloy Color: Blue Length: 48" Width: 3/4" Thickness: 3/8" Package Includes: 4 PK T Track 48x screws Here you can find a good t track for woodworking, for jigs and also.Various length t tracks you can choices,such as 24",36",48",3"intersection kit and t track clamps. T-tracks were unique double-cut and Standard universal smooth internal groove.So it make you can easily building and customize your ideal workbench,expand and optimize your work configuration, machine tables,jigs and fixtures. T slot tracks / tee track intersection kit and hold down clamps is very easy to install by screws,t bolts or knobs.