The Radial Rocker brush:
(I have a 14in version more scrubbing power pounds per force than a larger 18in) and find it a heavy brush to use. Only use it on heavily soiled glass or if someone has thrown egg and eggshell on glass. Blue steel pad is the best for removing egg, it works better than bronze wool, magic erasure and green bee rubber pad). Used on solar panels for removing lichen, adequate.
Only use cold or warm water and bristles don't deform or fall out even on conservatories which tend to pull bristles from other brushes. Can buy replacement bristles if need be. The thing that tends to wear out is the bumper protectors every six-twelve months as a rule through heavy use daily.
