QAS slack adjusters are manufactured and produced in the same factory and on the same production lines as MEI premium brand slack adjusters. By redefining some of the materials employed in the manufacturing process MEI has been able to produce a durable, technically compliant product at a lower unit cost. QAS slack adjusters should therefore be used in less demanding duty environments than MEI OE brand slack adjusters, or on those vehicles destined for replacement. As such the QAS brand warranty is 12 months or 100,000km.