New ergonomics and body design. Reduced trigger pull effort. Reduces the potential for operator injury from long term use. Stainless steel wetted parts. Compatable with water based materials. Unique aircap design. Unsurpassed finish quality with perfectly balanced fan. High transfer efficiency. Important product savings and environmental protection. Fine thread packing unit. Fine packing adjustments for improved sealing. E-Z adjust aircap. Allows adjustment without loosening the retaining ring. Reduced number of components. easy maintenance.