Package Included: Contains 24 pieces of hole brushes, 4 pieces of each size. The bristle diameter is 8/10/12/15/17/19 MM, and the length of each brush is 4 inches/10mm. The brush is suitable for tight places and pipes. Sufficient quantity and sizes can meet your different needs. Material: Stainless steel is strong and , has a long service life, can thoroughly remove rust and details, and is a good alternative to traditional manual wire brushes UNIVERSAL 1/4inch HEX HANDLE: This shank easily mounts with brushes on drills, die grinders, impact drivers, corresponding driver handles, and other rotary tools. Wide range of uses: The wire hole brush set can not only be used to clean tires, bearings, holes and pipes, but also can be used for rust removal or paint removal, metal polishing, deburring treatment, etc. Reasonable design: using stem wire and double helix straight wire filling materials, fine all-stainless steel wire, innovative spiral knotted wire structure, hexagonal handle, stainless steel bristles The wire brush can bring great convenience to your cleaning work Colour:Silver Material:Stainless steel Package Contents: 24 * Wire pipe brush Only the above package content, other products are not included. Note: Light reflection 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.