Integrated 1st Stage Regulator Non-Adjustable Unbalanced Diaphram 2nd Stage Regulator 28" Flex Hose Button Style Submersible Pressure Gauge The Catalina "Pony" cylinder produced from high strength aluminum alloy. All seamless aluminum alloy compressed gas cylinders are manufactured in accordance with U.S. Department of Transportation (DOT) 3AL and Transport Canada (TC) 3ALM requirements. All cylinders shipped ground unless otherwise requested. Receive a current VIP sticker prior to shipping. Comparable parts maybe used due to stock. **Due to costs and laws regarding shipping tanks by air, overseas and customers in Alaska will need to contact us directly by e-mail or telephone.** Please only place your order if you are in the continental USA and it can be shipped UPS ground.