Features: <br> <br>Long service life time due to low friction, low operation noise. <br>No stick-slip effect, heats up less, reduced drive power required. <br>Low frictional loss, high transmission efficiency. <br>There are a lot of balls rolling movement between the screw shaft and ballscrew nut, they are able to get a higher efficiency of movement. Helpful in saving. <br>Ballscrew used the ball movement, so the starting torsion is very small, doesn't appear a sliding motion creeping phenomenon, can ensure accurate positioning. <br> <br>Specifications: <br>Total Length: 500mm / 19.69inch <br>Screw diameter: 12mm / 0.47inch <br>Screw pitch: 4mm / 0.16inch <br>Color: Silver <br>Weight: Approx. 442g <br> <br>Package Included: <br>1 x Rolled Ballscrew (500mm) <br> <br>Note: <br>Please allow 0-1cm error due to manual measurement. Thanks for your understanding.<br>1、Long service life time due to low friction, low operation noise <br>2、No stick?slip effect, heats up less, reduced drive power required <br>3、Long service life time due to low friction, low operation noise <br>4、There are a lot of balls rolling movement between the screw shaft and ballscrew nut, they are able to get a higher efficiency of movement. Helpful in saving <br>5、Ballscrew used the ball movement, so the starting torsion is very small, doesn't appear a sliding motion creeping phenomenon, can ensure accurate positioning