Hand wheel operated worm gear actuator with high efficiency for greater output torque. Can be more convenient and require less space than lever handles. Features Cast iron body with metal gears and bearings ISO 5211 mounting pattern Fully enclosed and weather-proof Factory lubricated for their lifetime Wide range of sizes and torque outputs Many available options including locking, high temperature, and marine and buried service Adjustable stops for both open and closed positions Highly visible position indication pointer