Sky Blue Hi-Performance Burnish Pad 3050 restores gloss to dull floors. It is designed for frequent burnishing with less dust and minimizes burning, point buildup and swirl marks. Pad is optimized for use on softer floor finishes typically used in retail environments and burnished frequently. Use with machine speeds from 1500 to 3000 RPM. Polyester fibers offer a textured, nonwoven construction. Center hole diameter is 3-3/8".