A wheeled storage container apparatus for storing and transporting tools and equipment includes a body having a body back side with a drop lip portion extending down from proximal a body top side and defining a catch cavity to hook onto a railing. A lid is coupled to a body front side to selectively cover or expose the body top side. A pair of wheels is coupled to the body. A tray has a tray rim selectively engageable with the body top side and a plurality of tray compartments extending down into the body inside. A locking arm has a pivot portion pivotably coupled to the drop lip portion of the body back side, an arm portion extending from the pivot portion, and a catch portion extending from the arm portion. The catch portion is selectively engageable with the lid to maintain the lid in a closed position.