This 2-piece linear motion rod set is designed for smooth, stable movement in CNC, milling, drilling, grinding, and other automated machinery. Each shaft measures 20 mm in diameter and 1200 mm in length for reliable linear travel in industrial and DIY setups. Made from high carbon steel with a precision-ground finish, the rods offer high hardness, repeatable accuracy, and low-friction operation. An electroplated surface helps resist rust and corrosion for long-term use in demanding environments.