"No need for elbow grease"
I use these brushes all the time (Pro Detailer and Kitchen). I keep one in the bathroom the other in the downstairs cloakroom so they are both to hand when cleaning. The different brush heads get into difficult to reach areas easily and the speedy rotation means I just have to hold the brush in place without any effort on my part.Great for the back of taps and the corners of Georgian sash windows. Also brought our shower stall doors up like new.Have had both over a year and not had to replace batteries yet. Also bought one for my daughter when she complained about her taps being difficult to clean.Now they sparkle.