Specially designed and manufactured to eliminate swirls in polished aluminum. These bonnet covers are made of ultra-soft material that leave a swirl-free finish and fit over our 6 and 7.5” buff pads. Must be used with a Porter Cable 742XP Random Orbit Polisher or similar machine and Bright Work Blue Polish. Only for use as a final step in the polishing process. Bonnets are washable for repeated use and feature an elastic band that holds them to the buff pad. Make sure you pick the right size for your buff pad. Buff pad not included.