1. High quality ---- Made of high quality brass and stainless steel, corrosion resistant, not easy to rust, long life, same effect and low cost.2. Wide application ---- This wire brush set is suitable for polishing and grinding of most ferrous and non-ferrous metals, castings, welded joints, rivets, rust.3. Main functions ---- This wire brush set can be used to remove burrs, rust, dust from metal surfaces, remove oxidation, scale and paint from hard-to-reach areas, etc.4. Suitable for most hand drill machines ---- This wire brush has a 3mm rod diameter and is suitable for most hand drills, sanders, any machine that can be fitted with a rod handle.5. What you get ---- This wire brush set includes: 12 wire brushes of 6mm diameter (6 brass brushes, 6 wire brushes), 12 wire brushes of 15mm diameter (6 brass brushes, 6 wire brushes), 12 wire brushes of 25mm diameter (6 brass brushes, 6 wire brushes).colour: blackMaterial: brass + stainless steelPackage Contents:1 set x wire brushOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.