The Miele SEB 217-3 Electric Direct Connect Powerhead self adjusts to any carpet height, excels at edge cleaning and cleans bare floors with ease thanks to it's integrated sealing strip. This Powerhead also has all-rubber wheels so you do not have to worry about scratching your delicate surfaces. Best of all this Powerhead has a gear-driven belt with electronic overload so if something gets caught in the brushroll the Powerhead will shut off automatically. No more broken or stretched out belts!!!