Warning: Before you use the wire brushes set, please make sure you wear a good pair of safety gl and other protective equipment. Feature: 100% brand new,never used Coating, can improve the quality of metal stone,economy, high efficiency. Perfect Accessories for Jewelers, Locksmiths, Gunsmith, Technicians, Coin Collectors, Archeologist, Students, Hobbiest ect. Suitable for removing rust and corrosion - Use on items made of brass, copper, gold or other soft ferrous metals-such as tools, door knobs, automobile parts and electrical contacts. Also suitable for metal surface cleaning, grinding, dusting, deburring, polishing, stripping residue Unique design: hardened wire cleaning brush for reducing wire breakage and long life, great for the use of electric tools such as angle grinder, electric drill, special equipment and so on Specifications： Material:stainless steel \ brass Each brush is mounted to a 1/8" (3 mm) diameter mandrel . Package include： 10 x 38mm stainless steel wire brush 10 x 25mm stainless steel wire brush 10 x 22mm stainless steel wire brush 10 x 25mm stainless steel wire cup brush 10 x 15mm stainless steel wire cup brush 10 x 8mm stainless steel wire Pencil Bruch 10 x 5mm stainless steel wire Pencil Bruch