Heavy Duty Rolling Storage Cart:The rolling storage cart is constructed with high quality ABS storage baskets,with a heavy sturdy frame and sleek powder-coated finish which is anti-rust.The cart has an excellent load-bearing and each tier shelving capacity of up to 44lbs Flexible Storage Cart:The 3-tier utility carts are constructed to be reliable while carrying weighty loads.It is easily guide the service cart amid indoor and outdoor using the push handle.The utility cart equipped with 4 pcs 360°casters (2 lockable),that allows the cart roll smothly and maneuver easily around tither corners,when your heavy load needs to remain stationary,use locking brakes,simply lock them to keep the cart securely in place