- The KM 70/30 C Bp Adv is based on the popular KM 70/20 and includes all of its outstanding features. - Features an electrically powered main roller brush and side brush to make pushing easier and increase productivity. - An integrated extraction system for dust free applications. - The 20 litre hopper is very easy to empty and both main and side brushes are adjustable to suit different surfaces. - Folds flat for easy storage.