2 Pack, 3/4″, Carbon Steel Brush, Ideal For Cleaning & Removing Rust & Corrosion From Items Made Of Brass, Copper Or Other Soft Ferrous Metals Such As Tools, Door Knobs, Automobile Parts & Electrical Contacts, You Can Also Use Wire Brushes To Create An Artistic Effect On Coarse Grained Wood, Its Shape Makes It Well Suited For Cleaning Flat Surfaces, Perfect For Getting Into Hard To Reach Places Like Slots.