Features: The T-track for woodworking combines with aluminum alloy material, strong and sturdy, hard to bend. Each T rail track has holes and screws, easy for you to install it to the table. The blue color of the aluminum T track is simple and classic, easy to be distinguished. Specifications: Main material: aluminum alloy Color: blue Size: about 48 inch in length, 3/4 inch in width, and 3/8 inch in depth Hole distance: about 4 inches apart from each hole Package includes: 6 x T tracks with Screws Notes: Small items may include, please keep them away from little children. Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.