The HD-Series automation electric screwdrivers operate with only the HDC controllers. The HD-Series electric screwdrivers feature a high performance brushless motor design that provides durability and reduces the common maintenance costs associated brush type electric screwdrivers. These brushless electric torque screwdrivers are engineered for automation assembly applications that provide manufactures with a rapid, reliable and precise method of fastening screws. The technology of these automation tools provide tighter process control and higher quality standards, while keeping costs down. The patented HD-Series hybrid torque control system is the world’s first torque tool using both air and electric power to set and control torque.