If you're into polishing, these wool discs are a game-changer. I used them on a repainted metal surface, and the results were impressive. The discs didn't scratch the surface, and there was minimal shedding. Even after several uses, the first disc still has plenty of life left. The 4-inch size is perfect—easy to control and great for tight spots.

The density of these wool discs is just right. They're mounted on durable plastic cores, which means they hold their shape well during use. I tested them on stainless steel with a white abrasive bar, and they delivered a smooth, mirror-like finish. Having 12 discs in the pack is fantastic because you can dedicate different discs to different polishing compounds or materials.

One thing to note: these discs work best at speeds under 11,000 RPM. I learned the hard way that higher speeds can melt paint or plastic onto the wool, turning it into a hard scraper (not ideal!). A variable-speed grinder is your best friend here—test at lower speeds first to avoid mishaps.

These discs are versatile—great for automotive parts, metal surfaces like aluminum or brass, and even woodworking equipment. I used them to polish cast iron table tops, followed by polishing compound and car wax for a flawless shine. They also worked wonders on an old aluminum bracket, restoring it to near-new condition without disintegrating near edges.

Overall, this pack is a steal for the price. Whether you're a DIY enthusiast or a pro, these wool polishing wheels will save you time and deliver professional-grade results. Just remember: safety first—wear goggles and a mask!