DAS Foam Pads require a 5" (4.75" to 5.25") Velcro backing plate for safe operation. The Ultimate Detailing Machine Complete DAS Pad Kit is the perfect addition to your Ultimate Detailing Machine Model 1000 car polisher or the Porter Cable 7424 car polisher. The foam pad kit includes one of each Dual-Action System (DAS) Foam Pads and a FREE DAS Microfiber Bonnet for buffing off polishes and waxes. The DAS ScratchBuster polishing pad cuts like a heavy compounding pad (when used with a fine cut compound), yet polishes out to a near flawless finish (when used with a final finish polish). Depending on the cut of the polish, it performs like two completely different foam pads. The DAS SwirlBuster polishing pad cuts like a light compounding pad, yet polishes out to a flawless finish. Depending on the cut of the polish you use, the DAS SwirlBuster pad can aggressively remove swirls and other minor imperfections or bring back the full gloss potential of your car?s paint. Use the DAS Polishing Pad to keep your new car or like-new paint looking show car perfect. The DAS Polishing Pad is soft, with just enough body to work with your favorite pre-wax cleaner polish, finishing polish, cleaner/wax or one-step product. Polish regularly with the Ultimate Polishing Machine and the DAS Polishing Pad and you'll never have to polish you car with heavy, abrasive polishes that thin your clear coat. Use the DAS Wax & Finishing Pad to apply your favorite liquid waxes and paint sealants. The ultra soft foam lays down an even coat of all last step products. The DAS Wax & Finishing Pad also doubles as a buffing pad. When used with last step products that dry to a haze, the DAS Wax & Finishing Pad can be used to buff off the wax film to a high-gloss final finish. Ultimate Detailing Machine