Maximum 4500 RPM. Nylon cup and wheels abrasive Brushes mounted on 1/4 inch Hex shanks, Fits any drill or Impact Drivers. Commonly used for prepping surfaces, deburring, light removal of paint and coatings. This adaptable Nylon Brush is perfect for cleaning delicate parts for Automotive, Metalwork, Woodworkers, Refurbishers and DIYs, with minimal worry about damage or scratches. High durability, strong and tough brush, long service life, shorten polishing time and improve equipment efficiency. Colour: red Material: nylon + stainless steel Size: handle diameter 6mm Package Contents: 1 * 4 inch Circular Wheel Brush 1 * 2 inch Circular Wheel Brush 1 * 2 inch Wire Cup Brush 1 * 1 inch Wire End Brush Only the above package content, other products are not included. Note: Light 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.