You receive: stainless steel cleaning brushes and brass cleaning brushes of different sizes, each with a 0.64 cm hexagonal handle, to meet your common wire brush application needs. Scientific design: The hole brush can easily reach narrow holes and narrow areas, and is designed to be used in right-angle grinders; industrial wire brushes are suitable for cleaning steel parts, machinery, unfinished metal parts, paint stains, corrosion without damage or fine lines. High-quality materials: The aperture cleaning brush is made of stainless steel and brass copper, which is sturdy and , and can thoroughly clean rust and details; the stranded wire increases the cleaning effect. Specification details: The drill wire brush is 0.64 inches (approximately 0.6 cm) hexagonal shank, suitable for power drills, impact drills, and mold grinders. The overall length is 4-3/4 inches (approximately 11.4 cm), and different widths include 8, 10, and 12 , 15, 17 and 19 mm, so you can choose the right size