The Siamp deluxe Optima 50 universa toilet component pack can be installed with any plastic or ceramic cistern. Comes with Optima 50 dual flush valve and 99T inlvet valve, addiitonal bayonet strainer nut and seal to allow for 1 1/2 outlet, pan to cistern coupling bolts and doughnut washer. The Optima 50 flush valve is complete with 470mm cableand chrome plated push button and is flush and height adjustable. Small Flush 3-4.5 litres. Large flush 4.5-6 litres. Suitable for cistern lid holes from 16mm diamter to 50mm diameter. WRAS approved. 10 year warranty.