The Eastwood 3-piece brush kit contains three wooden handled brushes with industrial 304 grade stainless steel bristles. Each brush has a different number of bristles so you get varying results with each brush, according to your prepping needs. The tough stainless steel bristles make quick work of aluminum oxide before welding. Use the brushes for general cleaning or prep work before MIG welding too. Whatever metal cleaning your welding project calls for, the Eastwood brush kit will get it done.