The innovative "Dual-X" design. Smoothly facilitates up to 27 lbs (120 N) even if the load is applied vertically or horizontally. Maintains its smooth and consistent movement even when a moment load occurs. Can be used with a motor drive. Precision performance that passed 500,000 cycle tests. The guide block is preloaded significantly reduce rattling. Multiple guide blocks can be used with a guide rail (rails and blocks ordered separately). Ideal for automated machinery, robotics, medical, analysis or food equipment and kiosks.