Air-motor two holes. Made of stainless steel, prevent effectively of waterstoma-block. Product Description Made of stainless steel, prevent effectively of waterstoma-block The latest design of waterpipe/ airtube separated structure. More rational design makes more user-friendly action. Easy removal and easy assembly More durable and easier to maintain make a low-cost choice. Be compatible with European same products Internal cooling system makes cooling quickly and evenly. Diplopore-spray design prevents water splashes, making the perfect performance.