The Nilfisk Viper LSU255 50000128 is a wet and dry machine, twin motored 2 x 1000w, to empty the machine there is an emptying pipe at the front of the machine. The LSU has a modular design with 55L capacity, easy to use, supplied complete with hose, crevice tool, round dusting brush, 2 piece wand and dry and wet floor tool.