The 150LX regulator is similar in design and performance to the 200LX but without the PVD Plating and diver inhalation adjustment. The 150LX delivers great performance at a moderate price. This second stage is paired with the DC7 for a great travel the world design or for those divers looking for great performance and certified to 40% oxygen. The 150LX is also paired with the workhorse HO2 1st Stage for use with 100% oxygen. The second stage front metal ring, packing nut & end cap are all made of 316 Stainless Steel. All LX regulators come standard with MiFlex? hoses and orthodontic mouthpieces with dual color tabs. It comes standard in both YOKE or DIN configuration. The LX regulators come standard with Hollis?s Lifetime Warranty, 2-Year Service Interval and Free Parts for Life.