General description A comprehensive wire brush set suitable for numerous applications including removing carbon from internal threads, pipes, drilled holes, or small bore holes. Technical specifications Includes: 6 stainless steel brushes, 6 brass brushes, 6 nylon brushes Brush sizes: 9mm, 11mm, 13mm, 15mm, 17mm, 19mm Extension length: 150mm (6 inches) Shank type: 1/4" quick chuck for power tool use Compatibility and accessories Soft grip handle with quick chuck fitting Canvas fold-up case for storage Replaceable Brush Sets available: 1846 (nylon), 1847 (brass), 1848 (stainless steel), all in packs of 6 brushes