Suitable for a variety of uses including internalexternal thread cleaning cleaning drilled holes and cleaning small bore holes etcsix stainless steel brushes six brass brushes soft grip magnetic handle and a 150mm magnetic extension supplied with canvas fold up case very handy to have in your toolkit set includes6 x nylon brushes6 x stainless steel brushes6 x brass brushes1 x soft grip magnetic handle1 x 150mm magnetic extension bar1 x canvas foldup case