Extra large roller bearing wheels (3.62"), wide base, maximum stability Easy transport over rough pavement or stairs Extra wide comfortable extension handle, molded into case, prevents wear Size: 18" x 15" x 8" deep Extension handle locks in place automatically when extended, retracted Two tote handles for convenience. Both are spring loaded for protection D ring provided for Bunji cords to carry other cases on top Super tough, black polyethylene case Rotationally molded for maximum strength. Minimum wall thickness 0.120" 3-panel hinged tool pallet in lid plus additional pallet in bottom