OXO Good Grips Deep Clean Grout Cleaning Brushes 5 "Super set of strong brushes" Miss Meyer 21 December 2017 I got a second set of these. I use them for cleaning those places you can't reach or get at easily. Scrub around the bath, taps, sink, corners, etc. But also used for my bike, cycling along a trail means the mud sometimes collects between the wheel and the mudguards, these brushes are ideal and strong. Great!