A genuine Geberit part, the Geberit Pneumatic Dual Flush Activation Unit 240.574.00.1. This product connects to the top of the flush valve and suits the Geberit (241.413.21.1) dual flush button. Made of plastic, it has a length of 105 mm and a weight of 0.11 kilograms. A good quality product from manufacturer Geberit.