1. Sanding brands contain 6 sanding grits (80 grit, 120 grit, 240 grit, 320 grit, 400 grit, 600 grit) and 3 diameters.

2. Universal drum mandrels. 24 Pcs shank reusable sanding drum are divided into in 3 diameters.

3. Common and standard size fit for all rotary tools like for Dremel etc.

4. Easy to install. Make sure the drum have been screwed tightly, drum mandrels with self-expanding rubber cushion.

5. Widely applied in smoothing surface and curved edges, polishing materials, like home improvement, artwork.