This is a high - quality linear motion product from SBC. The item number is SBS15SL - C - 2 - K1 - 580mm. It is manufactured in Korea. 1. Quantity and Condition The product comes as 1 set, which includes 1 track rail and 2 blocks. It is brand new, although it is surplus stock, ensuring that you receive a product in excellent condition for your applications. 2. LM Guide Type It is a ball - type linear guide. Ball - type linear guides are known for their smooth operation, high precision, and ability to handle both dynamic and static loads efficiently. This makes them suitable for a wide range of industrial and mechanical applications. 3. Dimensions The height when the rail is combined with the block is 24mm. This dimension is crucial as it determines the overall height of the installed linear motion system and its compatibility with other components in the machinery. The width of the block is 34mm, providing a stable base for the moving parts. The rail width is 15mm, which is designed to support the block's movement and distribute the load evenly. The block upper surface fastening dimension is 26mm X 26mm, which allows for secure attachment to other parts of the system. The length of the track rail is 580mm, making it suitable for applications that require linear movement over this specific distance. The rail hole pitch is 60mm, and the rail hole size is designed to use an M4 bolt, ensuring a proper and secure connection when installing the rail. The distance from the end of the rail to the first hole (G value) is 20mm at both ends, and the pitch of the rail is 20 + (60 X 9 times) + 20, which provides a specific pattern for installation and attachment. These precise dimensions and features make the SBS15SL - C - 2 - K1 - 580mm an ideal choice for those seeking a reliable and accurate linear motion solution for their mechanical projects.