The Lisle Actuator Motor Wrench Set, No. 64100, is a toothless, infinite ratchet with hinged handle design to make it easier to remove and replace fasteners on small, electric HVAC motors. These motors control air flow into the vehicle and are commonly found in confined areas under the vehicle dash, the company says. The ratchet can be flipped to switch from clockwise to counterclockwise drive. The set includes an 8mm socket and 1/4" square drive adapter for use with 1/4" sockets and bit holders. This set can also be used in other hard-to-reach applications.