Features 1、High sliding table stiffness, low thermal deformation and high stability 2、This is double shaft ball screw linear guide rail which can provide stable performance 3、Made of high quality aluminum alloy material, durable and long service life. 4、Generally used in linear reciprocating applications, suitable for the automation industry 5、Available in three styles for your choice Specification Features: 1. High sliding table stiffness, low thermal deformation and high stability 2. This is double shaft ball screw linear guide rail which can provide stable performance 3. Made of high quality aluminum alloy material, durable and long service life. 4. Generally used in linear reciprocating applications, suitable for the automation industry 5. Available in three styles for your choice Specification: Condition: 100% Brand new Material: Aluminum Alloy Effective Stroke: 500mm Screw Rod Diameter: 12mm, 16mm, 16mm Turn the Motor Once(mm): 4mm, 5mm, 10mm Motor: 57 Motor Package List: 1 x Guide Rail(with 57 motor) Package List