The Nilfisk Multi 11 22T is a wet & dry vacuum cleaner and is useful for a wide range of applications. This can be used to vacuum liquids or dry dirt with or without bags and the innovative filter clean indicator and push to clean feature helps to maintain optimal performance. The filter is also washable for longer life. One of the best features on this great vacuum is the automatic dust extraction feature which can connect directly to power tools. This means it can automatically switch on and provide extraction for any dust or mess while you\'re working. The vacuum then cuts out automatically after the power tool has finished working, for added convinience.