A Rocker Arm is a lever that is used to transmit motion from one point to another. In quick couplers, a rocker's arm is used to connect and disconnect the coupler from a hose or other fitting. The rocker arm is made of metal and has a pivoting joint in the middle. When the rocker's arm is moved, it causes the coupler to open or close.Attributes: • Guides the ram into the coupler and prevents it from binding• Designed to be flexible when the coupler is connected or disconnectedApplications:A Rocker Arm is used to transfer force from the coupler to the ram.