Geberit Impuls 250 Twico 1 Replacement Dual Flush Cistern Valve.According to the pictures.There are buttons and shelves.This item has an installation manual,which is very easy to install and only takes a few minutes to replace.Particulars:The tank cover fixed frame can be selected. Button 38 mm (screw button) The amount of flushing can be adjusted according to the amount of water in the tank.1:All items you see in the photo are included.We will not change the color of the items.2:If you have any further questions,please contact me directly. 3:We hope our service will give you satisfaction.