Abstract: A hand-operable connection assembly is described for quickly connecting and disconnecting a vehicle from a boom assembly. The connection assembly includes a tower and a bracket, the tower is rotatably secured to both an actuator and a boom arm while the bracket is secured to a vehicle or construction device. The tower and bracket interconnect via pins that seat in pockets, and the tower is secured or locked to the bracket via a hand-operable locking clevis that rotates about one of the pins and wraps around the curved exterior of one of the pockets. The center point of the exterior curvature is offset from the center point of the clevis rotation such that rotation of the clevis tightens the clevis against the pocket. The pins may be located at the two hinges connecting the boom arm and actuator to the tower, or the pins may be separated from the hinges. The exterior of the pocket may include a grind sheet designed to scrape against and secure a grind bar of the locking clevis in a locked configuration.