Safer than wire brushes, synthetic chemical-resistant nylon bristles are extremely safe and will not spark, corrode, rust, shed, or puncture skin, unlike abrasive metal or steel brushes. Features the industry's softest yet sturdiest bristle integrity with outstanding bend recovery after continued and prolonged use. High quality: Designed for coarse brushing surface preparation, heavy grout removal, polishing, and scrubbing. This nylon cup brush is gentle on all materials and made from top-quality nylon for maximum user safety, gentle cleaning, and extended brush life. Wide application: Nylon brush kit is an all-material solution, safe for rust and paint removal and cleaning on all wet or dry applications including metal, steel, stainless steel, wood, aluminum, plastic, PVC, tiles, stones, and more, while maintaining bristle integrity after extended use. Practical design: Designed for easy access into narrow holes and confined areas. Crimped style for light to medium-duty applications. Removes rust, scale, and paint in hard-to-reach areas. Nylon cup and wheel abrasive brushes mounted on 1/4 inch hex shanks, compatible with any drill or impact driver. 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: Light and display differences may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.