A new addition added by Hollis to their Regulator line, meet the 150LX! Similar in design to the 200LX but without the PVD Plating, the 150LX delivers great performance at a moderate price. The 150LX is built for oxygen percentage 40% to 100%. The front metal ring, packing nut, and end cap in Stainless Steel. All LX regulators come standard with MiFlex® hoses and orthodontic mouthpieces with dual color tabs. The LX regulators come standard with Hollis’ Lifetime Warranty, 2-Year Service Interval, and Free Parts for Life.