WHAT YOU GET --- 3Pcs 3Inch 75mm Abrasive Nylon Wheel Cup Brush Set for removal of rust, corrosion and paint. 1/4inch shank fits all drills. Hardened steel wire for reduced wire breakage & long life. gray is coarse (80), Red is medium (120), blue is fine (240) grit. SAFER THAN WIRE BRUSHES --- Safer to use than wire brushes, SYNTHETIC, chemical resistant Nylon Bristles are extremely safe and will not spark, corrode, rust, shed, puncture skin, unlike more abrasive metal or steel brushes | Industry's softest yet sturdiest Bristle integrity with outstanding bend recovery after continued and prolonged use. HIGH QUALITY --- offers design 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 maximal user safety, gentle cleaning & extended brush use. APPLICATION WIDELY --- Nylon Brush kit is an All-Material-In-1, safe and easy light rust and paint remover and cleaner on ALL wet or dry applications like Metal, Steel, Stainless Steel, Wood, Aluminum, Plastic, PVC, Tiles, Stones and more, while maintaining its bristle integrity after extended use. DESIGN REASONABLE --- 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 wheels abrasive Brushes mounted on 1/4 inch Hex shanks, Fits any drill or Impact Drivers. Colour:Red+blue+grey Material:Nylon + metal Size:75mm Package Contents: 1 x red polishing wheel 1 x blue polishing wheel 1 x gray polishing wheel