Abstract: A four-wheeled wheelbarrow with main handle and lever releasable container for easy moving and unloading. The wheelbarrow has a tipping handle rigidly connected to the wheelbarrow container, and a support system for supporting the container. The support system includes two front wheels joined by an axle and independent rear wheels joined by a metal pipe and connected to a pair of container support arms. A tipping lock is mounted on one of the support arms of the support system, for securing the container against tipping during loading activities. The tipping lock is a laterally extending metal bar mounted on the container tipping handle that engages a metal bracket fixed to a support arm.