Safer than wire brushes, this synthetic, chemical-resistant nylon bristle brush is extremely safe and will not corrode, rust, or shed, nor will it puncture skin, unlike abrasive metal or steel brushes. Features the industry's softest yet sturdiest bristle integrity with outstanding recovery after continued and prolonged use. High quality design ideal for coarse surface preparation, heavy grout removal, polishing, and scrubbing. This nylon cup brush is gentle on all materials and constructed from premium nylon for maximum safety, effective cleaning, and extended brush life. Versatile application for use on all materials, including metal, steel, stainless steel, wood, aluminum, plastic, PVC, tiles, and more. Performs reliably in both wet and dry conditions while maintaining bristle integrity over extended use. Thoughtfully designed for easy access into narrow holes and confined spaces. Crimped style suitable for light to medium-duty tasks, effectively removing rust, scale, and paint from hard-to-reach areas. Nylon cup and wheel brushes feature 1/4 inch hex shanks, compatible with most drills and impact drivers. Color: Red Material: Nylon + Metal Package Contents: 1 x 4 inch (100mm) nylon circular wheel brush 1 x 3 inch (75mm) nylon circular wheel brush 1 x 2 inch (50mm) nylon circular wheel brush 1 x 2 inch (50mm) nylon wire cup brush 1 x 3 inch (75mm) nylon wire cup brush 1 x 1 inch (25mm) nylon wire end brush Note: The color may appear slightly different due to lighting and display settings. Measurement may vary by +/- 1-3 cm.