2 Pack, 1/2", Carbon Steel Brushes, Use On Items Made Of Brass, Copper, Gold Or Other Soft Ferrous Metals Such As Tools, Door Knobs, Automobile Parts & Electrical Contacts, Create An Artistic Effect On Coarse Grained Wood Suited For Cleaning Flat Surfaces & Getting Into Hard To Reach Places Like Slots, Versatile Brush For Removing Rust & Corrosion, Polishing Metal Surfaces, Deburr & Blend Surface Junctures, Clean Electrical Components, Compatible With All Dremel Rotary Tools.