GEM Squat Toilet Flushometers Quiet, Exposed, Piston Type, Chrome Plated Closet Flushometer for top or back inlet squat toilets with the following features:Fixed Volume Piston with Filtered O-Ring By-PassADA Compliant Metal Oscillating Handle 1" I.P.S. Screwdriver Bak-Chek Angle Stop 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 Extrenal Volume Adjustament to Ensure Water Conservation Handle Packing, Stop Seat and Vacuum Breaker molded from PERMEX Rubber Compound for Chloramine Resistance