High-quality materials: Made of brass, stainless steel and nylon, these mini wire cleaning brushes are sturdy and durable enough to thoroughly clean rust and details.9 pieces, 3 pieces of brass, 3 pieces of stainless steel, 3 pieces of nylon. Stainless steel brush: steel wire brush is used to clean and remove loose paint, scale and rust on metal parts. It is also suitable for heavy scrubbing, saving you time and energy. Nylon brush: easy to use on the surface of the finished product, very suitable for removing dirt and debris on the inner door panel, decorative parts and dashboard, it is very simple and convenient to use. Brass brush: Brass wire brush can clean unfinished metal parts, such as threads, terminals and knives, without damaging the surface or fine features, meeting most of your cleaning needs. Multi-purpose wire brush: This wire brush set has a comfortable handle and easy to grasp. It is suitable for cleaning unfinished metal parts, machinery, paint stains, steel parts, etc. Package includes: 9 * Brush