Let me start by saying this wood carving disc set is a beast when it comes to removing material quickly. I used it on some oak slabs, and the flat grinding wheel ate through the wood like butter. The different shapes (flat, oblique, arc) allowed me to create some beautiful contours for a live-edge table project.
The flap discs are surprisingly good quality for the price. I've sanded about three furniture projects with them, and they're still holding up well. They leave a decent finish - not mirror smooth, but perfect for prep work before hand sanding.
Now for the bad news: that chainsaw disc is terrifying. I tried it once on scrap wood and immediately understood why the veteran woodworker in the reviews warned against it. The kickback potential is real - mine grabbed and nearly twisted the grinder out of my hands. It's now permanently retired to my 'never use again' drawer.
Fit issues are hit or miss. While they worked fine on my Milwaukee grinder (with the included conversion rings), my buddy couldn't get most discs to fit his DeWalt properly. The packaging should be clearer about compatibility requirements.
The stump grinding attachment is clever in theory but poorly executed. Those tiny retaining clips are a nightmare - lost one within minutes of use when it went flying across my workshop at Mach 3.
For beginners: These cut aggressively, so practice on scrap wood first! I learned the hard way when my first attempt left an irreversible gouge in what was supposed to be a table leg.
Final verdict? At this price point, it's good value if your grinder happens to be compatible and you avoid the dangerous chainsaw disc. Just don't expect professional-grade precision or durability from all attachments.