Replacement toilet flush button for Siamp Optima 49

Replacement toilet flush button: Compatible with Siamp Optima 49 and Twyford CF1003CP, made of ABS, restores dual flush functionality. Convenient dual flush: 48 mm diameter, fits lid openings from 39 to 42 mm, clockwise screwing onto the valve. Simple installation: Turn off the water supply, empty the tank, dry the area, then screw it in without professional tools. Standard size: 48 mm button, for lids with openings from 39 to 42 mm, comes with 1 flush button. Long-lasting reliability: Resolves dual flush malfunctions or leaks due to wear and tear, prevents water waste.