This product is a DC (Direct Current) reciprocating linear actuator. It features the ability to convert rotational motion into reciprocating linear motion (back and forth) and is often used in DIY projects or automation. The stroke length can typically be adjusted between 3 to 15 cm depending on the model, and it is often available with a speed control unit. [1, 2, 3, 4, 5, 6] Price: 200 SAR