This is Heavy Duty Linear Actuator provides cost-effective high force capabilities. The stainless steel shaft accompanied by metal gears allows it to push and pull up to 2000 lbs, and hold up to 4000 lbs. The environmental protection rating provides a versatile unit able to withstand dust, water, and harsh environments. The heavy-duty actuator is the only unit in our line of products with adjustable limit switches. This feature allows the user full control over where to start and stop the actuator. We also have this model available with potentiometer feedback here! Note: limit switches are not included in stroke lengths longer than 24" Our goal is to lead innovation while bringing you the most affordable, high-quality linear motion products that money can buy.