1/2" Brush Diameter2 Pieces Per PackIdeal For Cleaning And Removing Rust And CorrosionUse On Items Made Of Brass, Copper, Gold Or Other Soft Ferrous Metals-Such As Tools, Door Knobs, Automobile Parts And Electrical ContactsCan Also Use Wire Brushes To Create An Artistic Effect On Coarse-Grained WoodIts Shape Makes It Well Suited For Cleaning Flat Surfaces And Getting Into Hard-To-Reach Places Like SlotsCarbon Steel Brush