A trapezoidal ball screw is a mechanical transmission used to convert rotary motion into linear motion. It consists of a helical screw and balls that roll axially along the screw. Product name Trapezoidal screw Model Number Trapezoidal Brand Name SHUNTAI Material GCr15 Bearing steel, Steel, Bronze Manufacturing Process Rolled screw, ground screw Feature Long Operating Life Delivery 7 Days Shipping Port Shanghai