CGW Abrasive 59537 Quick Change Disc – 3″, 36 Grit AO (pack of 25) Size & Grit: 3‑inch diameter, 36‑grit (extra coarse) aluminum oxide for aggressive material removal. Backing & Bond: Two‑ply polyester backing with a Roll‑On (Type R) quick‑change spin‑weld attachment—enables fast, secure mounting to die grinders. Durability: Rated to 20,000 RPM for consistent performance on ferrous, non‑ferrous metals, wood, castings, weld cleanup, deburring, blending, and edge finishing. Packaging: Sold in a cost‑effective pack of 25 discs