- A blend of R&D advanced chemistry and shaped zirconia alumina abrasive and premium aluminum oxide grain.
- Up to 20 percent increase in performance and life over our former zirconia alumina wheels.
- Excellent performance-to-price ratio for lower total grinding costs.
![Norton Depressed Center Wheel, 4 1/2 in Dia, 1/8 in Thick, 7/8 Arbor, Zirconia Blend, 25 PK, #66252843212 Norton Depressed Center Wheel, 4 1/2 in Dia, 1/8 in Thick, 7/8 Arbor, Zirconia Blend, 25 PK, #66252843212](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/223005/317735/547-66252843212__53183.1590788599.jpg?c=2)