Features: Wire end cleaning brushes can achieves good polishing effect, improve efficiency. Make of Stainless steel and copper wire, which is wear resistant, heat resistant, can be used for long terms. Compared to other similar products, our stainless steel wire brush can remove burrs, rusts, dust and oxide layers faster and polishing a variety of rough surfaces. The cleaning end brush pen have a slim shape and the extended shafts designs can easily access hard to reach place and clean tight areas and narrow holes with ease. Widely used for polishing wood and metal materials, and is perfectly used for circuit board cleaning, jewelry polishing, car rusts and dirt removal. Specifications: Materials: Stainless steel and copper Handle diameter: about 2.35mm/0.92 inches Length: about 4.8cm/1.89inch Package Includes: 20Pcs/set Wire Brush note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.