The patented design of Macro Engineering's D-10 Series Dual Lip Air Rings is the most advanced, efficient and versatile in its class.  The enhanced cooling technology of the D-10 Series ensures the best output rates attainable on new or existing blown film lines.  The advanced chamber and lipset design combined with quality materials and precise manufacturing tolerances guarantee superb gauge uniformity.  The superior bubble stability provided by the D10 Series and its easy adjustments assure simplified startup and higher productivity over a wide range of blow up ratios.