The 100LX has the performance of the 150LX, but is paired with the DC3 for a great value regulator. 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