For use with the gardman g tools patio block paving brush r r the gardman patio block paving brush is designed to help blitz moss weeds and dirt from patios and block paving slabs it is ideally suited thanks to hard wearing stainless steel wire bristles with guide triangle tips and a front back scraper for effective brushing r r this replacement head is robust and made from rust free plastic it is easy to change as you simple need to remove 2 screws to pop the head offr r key featur