The Roughneck ultra-slim wire brushes feature soft grip TPR handles and three rows of seven sets of bristles. They are suitable for varied applications, the set contains stainless-steel bristles for reduced contamination, brass for softer surfaces and nylon for delicate surfaces. Ideal for general cleaning in tight spaces and around fixtures and fittings, the preparation of most types of small surfaces and cleaning small parts such as contacts on spark plugs, each brush includes precision tip for awkward spaces.