Scientific design: bore brush offers easy access into narrow holes and confined areas, designed for use on right angle grinders; Industrial wire brushes are suitable for cleaning steel parts, machinery, the unfinished metal parts, paint stains, corrosion without damaging surfaces or fine featuresQuality: bore cleaning brushes are made of stainless steel and brass copper, strong and sturdy, can clean rust and detail completely; Twisted wire is for increased cleaning actionSpecification details: the drill wire brush is 1/4 inch hex shank fits for power drills, impact drivers, die grinders, the overall length is 4-3/4 inch, different width includes 8mm, 10mm, 12mm, 15mm, 17mm and 19 mm, each color 4 pcs for each specification, so you can choose the right size to use according to your needsMultiple application: you can keep wire bore brushes in your car, garage, office and kitchen, and the bore brushes are suitable for cleaning, polishing, painting, or rust removal in automotive, fabrication, machining and smiting applications, and a lot of otherscolour: gold + silverMaterial: stainless steel+brassPackage Contents:48 x wire brush for drillOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.