It is made of aluminium alloy material, which is, wear resistance, weather resistance and corrosion resistance. The T-slot miter track is for strong strength and long durability. It can be used for fences and different kind of woodworking projects like CNC, table saw, router table, etc. T-slot miter track length is about 400mm. It is a perfect accessory for woodworking. Product Name: Miter Track. Length: (Optional) 300mm/11.8”, 400mm/15.7”, 500mm/19.6”, 600mm/23.6′. Suitable for: woodworking projects, CNC, table saw, router table, etc. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight manual measurement deviation for the data. Please kindly note that. Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions.