Contains: Optima 50 dual flush valve with 470mm cable, Optima 50 push button, 1 1/2″ bayonet, 2″ bayonet, 99B bottom entry inlet valve with 1/2″ plastic connection, cistern to pan coupling bolts, doughnut washer. The universal pack contains everything required to replace all the internal cistern mechanisms in most bottom entry cisterns, Optima 50 with 470mm cable allows the push button to be mounted top, front, or side, compatible with 1 1/2″ & 2″ cistern outlets. Compact 99B inlet valve for small spaces, or to replace a conventional ball valve. Operating pressure from 0.5 to 10 bar. WRAS approved with a 10-year-guarantee