The Fluidmaster PRO Series was developed for the hard working plumbing professional who requires high quality, professional grade products that have been engineered for reliability and durability. The brand represents the most trusted professional toilet Preferred by professional plumbers Water saving adjustable flush volumes on full and reduced flushes Fits 1 1/2in flush outlet Cable length 350mm Replaces old style flush valve and lever Overflow height is adjustable from 8 1/2in to 13 1/2in Quick release cable/button connection eliminates cable damage Twist and release action enables simple maintenance.