Feature:1. 6PCS SET: The set includes different sizes of cleaning brushes with 1/4 inch hexagonal handles, and includes a hand driver handle.2. EASY TO USE: Users simply attach one of the brushes to the included handle for easy removal of any rust or dirt stains.3. DURABLE MATERIAL: Hole cleaning brushes are made of durable materials for ruggedness and cleaning power, with double twisted wires for enhanced cleaning action.4. WIDE APPLICATION: You can place the hole brush in your car, garage, office and kitchen for cleaning or rust removal in machining and sanding applications.5. VARIOUS SPECIFICATIONS: The hole brushes in the set come in different widths, including 8, 10, 12, 15, 17 and 19 mm, so you can choose the right size to use for your needs.Specification:Item Type: Bore BrushSize: Length: Approx. 4in / 10.1cmDiameter: Approx. 8mm / 0.31in, Approx. 10mm / 0.39in, Approx. 12mm / 0.47in, Approx. 15mm / 0.59in, Approx. 17mm / 0.67in, Approx. 19mm / 0.75in.Package List:6 x Bore Brush