Package contains: 8 pieces of stainless steel cleaning brushes in 8 different sizes, each with a 1/4 inch hex shank, suitable for ports, tubes, bearings, and other common wire brush applications. Quality materials: These bore brushes are made of stainless steel and brass copper, offering strength and durability for effective rust removal. The wire design enhances cleaning action, providing durable and abrasive performance. Size details: The drill wire brushes feature a 1/4 inch hex shank compatible with power drills, impact drivers, and die grinders. Overall length is approximately 4-3/4 inches. Brush widths include 8, 9, 10, 11, 13, 15, 17, and 19 mm, allowing you to choose the appropriate size for your needs. Multiple functions: Designed to access narrow holes and confined spaces, these brushes are ideal for use with right-angle grinders and suitable for cleaning steel parts, machinery, unfinished metal surfaces, paint stains, and corrosion without damaging surfaces or fine details. Suitable occasions: These wire bore brushes can be used in automotive, machining, and metalworking applications, as well as in the garage, workshop, or kitchen for cleaning, polishing, paint preparation, and rust removal. Durable construction: The bore brush set features high-quality wires that are long-lasting and maintain functionality over time. Wide usage: With an optimized length and diameter, these bore cleaning brushes provide easy access to tight spaces and offer broad application versatility. Type: Wire brush set Color: Silver Material: Stainless steel Size: Length: approximately 11.4 cm; Widths: 8, 9, 10, 11, 13, 15, 17, 19 mm Package Contents: 1 set of 8 wire brushes Warm notes: Sharp parts are included; please handle with care. The package includes only the items listed. Note: Lighting and display differences may cause slight variations in color. Measurement may vary by +/- 1-3 cm.