The present disclosure includes a hinge mechanism for a cargo accessory as shown and described. The hinge mechanism may include a linkage selectively attachable to a vehicle, and a cargo accessory carrying member pivotally attached to the linkage, where the cargo accessory carrying member is capable of being pivoted between a straight position, an upward position, and a drop position. The hinge mechanism may also include a guide member and guide apertures wherein the guide member may be selectively positioned within the guide apertures permitting pivoting of the cargo accessory carrying member relative to the linkage.