High Quality: The wire brushes are made of stainless steel, high quality and durable. Uses: dust removal, rust removal, deburring, metal surface pre-treatment before welding, rust removal and surface painting, coating, grinding, welding, deburring, shell grinding, tank cleaning, etc. , including hand drills, Dremel and other rotary tools with a chuck over 0.3 cm. Widely Used: Stainless steel wire brushes can be used for various metals, non-metallic and other materials, to polish and grind all kinds of rough surfaces, even hard-to-reach spaces. Widely used in micro-electronic devices and other industries. Attention: The shank must be inserted into the chuck with at least 3/4 length in high speed rotation. Before using wire brush sets, be sure to wear a good pair of safety glasses and other protective gear. Size: approx. 2.5 x 3.8cm. Quantity: 20 pieces Color: silver