Material: Made of brass finished iron which is sleek, sturdy and durable. Easy To : Can hold more billiard balls, and more convenient to take and sort out the balls. Easy to Install: Each has a screw hole for easy fixing of the track, there on the other side which has 5 holes to adjust the height and length. Suitable for billiard table and Chinese billiard table. Great choice for billiard accessories. Specification: Material: Iron Diameter: Approx. 6.5cm / 2.56 inch Rail Width: Approx. 6.7cm/2.64 inch Total Length: Approx. 30cm / 11.8 inch Belt Length: Approx. 23cm / 9.05 inch Package Includes: 6 x Billiards Table Rail (with installation fittings) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may -2mm error in size.