GEM Exposed Urinal Flushometers Quiet, Exposed, Piston Type, Chrome Plated Urinal Flushometer with the following features:Fixed Volume Piston with Filtered O-Ring By-PassADA Compliant Metal Oscillating Handle Vandal Resistant Stop Cap Adjustable Tailpiece Vacuum Breaker Flush Connection High Copper, Low Zinc Brass Castings for Dezincification Resistance Non-Hold Open Handle and No External Volume Adjustament to Ensure Water Conservation Handle Packing, Stop Seat and Vacuum Breaker molded from PERMEX Rubber Compound for Chloramine Resistance