24 piece assorted brass plated steel crimped wire brush set in display box For light duty cleaning and de-rusting  metal, brick, stone  etc. Contains assorted wire cup and wheel brushes with 6mm spindle for use with electric, air  or cordless drills with standard 3 jaw chucks 6 x 50mm cup brushes 6 x 75mm cup brushes 6 x 75mm wheel brushes 6 x 100mm wheel brushes