1、4 Parts Composition: The total length of the rail is 1200mm and consists of 4 parts: 0‑300mm, 300‑600mm, 600‑900mm, 900‑1200mm, can be combined as required. 2、High Accuracy: This parallel rail kit can be spliced, suitable for electric circular saws, with clear scales on the rail surface to ensure high operation accuracy. 3、Aluminum Alloy: These parallel guide rails are made of aluminum alloy, resistant to rust and corrosion, not easy to deform or break, and has a long service life. 4、Good Protection: The screw has a large contact area with the parallel guide rail, the position is predictable, and the track will not be damaged during operation. 5、Other Accessories: Equipped with various sizes of slide bars and screws for different projects, and 4 limit stops can be easily adjusted according to different needs.