Hydraulic Exposed Water Closet Flushometers Quiet, Exposed, Diaphragm Type, Chrome Plated Closet Flushometer with the following features:Dual Filtered By-pass ADA Compliant Non-Hold-Open feature type Actuator (specify Actuator type) 1" I.P.S. Screwdriver Bak-Chek Angle Stop Free Spinning Vandal Resistant Stop Cap Adjustable Tailpiece High Back Pressure Vacuum Breaker Flush Connection with One-piece Bottom Hex Coupling Nut Spud Coupling and Flange for 1-1/2" Top Spud Sweat Solder Adapter with Cover Tube and Cast Set Screw Wall Flange Diaphragm, Stop Seat and Vacuum Breaker molded from PERMEX rubber compound for Chloramine resistance