This kind of heavy duty tool trolley product has a solid structure, cold rolled steel sheet manufacturing, material thickness 1.0—2.0 mm, each drawer equipped with high quality ball bearing slide, 40 KG load capacity each drawer, ABS worktop. TPE silent caster, 4 or 5 inch Casters (2 swivel with brake, 2 rigid), Single key locking system locks all drawers at once. Professional heavy duty tool carts for sale, welcome to visit our factory,