20 Pc. Tube Brush Set Set includes 1 piece brush each in stainless steel, brass and nylon in the following sizes: 1/4, 3/8, 1/2, 5/8, 3/4, and 1. Choice of stainless steel, brass and nylon brushes makes this kit ideal for auto-repairing and polishing. Suitable for polishing and cleaning areas of autos, machines, etc.. Set includes an extension adapter with quick disconnect chuck for use with power tools. Ergonomically designed handle with quick disconnect chuck provide a soft, comfortable grip. All brushes have a 1/4 hex shaped quick disconnect shank. No tools needed to switch the brushes 9020 Yes - GASOLINE ENGINE EXHAUST (CONDENSATES/EXTRACTS)