Precision fit for pipes: The Ø 20 mm cylindrical wire brush reaches deep inside pipes, bore holes, and cylindrical cavities for thorough cleaning Solid steel wire construction: Stiff steel bristles remove rust, scale, and surface contamination from metal, steel sheet, wood, and stone effectively Ready for brazing and welding: Prepares metal contact surfaces to the clean, bare standard required for strong, reliable brazed and welded joints Universal round shank compatibility: The round shank fits standard drill chucks securely, letting you work fast without needing adapters or special tooling Generous 55 mm wire fill: The wide fill width ensures broad, consistent contact across the full bore diameter for an even, thorough clean in a single pass, Weight: 0.110231131 pounds, Manufacturer: Wolfcraft