The Sonus SFX-1 4' Spot Pad is the ideal solution for polishing out surface scratches, water or bird spot etching and heavy swirl marks. This smaller pad applies the energy to a smaller area in order to effectively 'cut' the paint and get more work out of the polish. Larger pads just can’t compete. Use with Sonus Restore (SFX-1) or other compounds and paint cleaners.