A wheel is provided for coupling to a bearing case at an outer cylindrical surface and a lateral annular surface of the bearing case. The plastic pipe has an inner and an outer surface, with the inner surface defining a channel for conveying natural gas and the like. Strapping is supplied which is engageable with the arms when the arms are folded upon the radiator placed upon the tray member. A resilient member formed in the channel biases the ball joint to selectively maintain the handle in the open position.