Weiler Tiger® AO 6 in type 11 flaring cup wheels deliver the right combination of performance and value. Our advanced bond technology provides long product life while an aluminum oxide and silicon carbide abrasive grain mix performs well with burn-in/burn-on sand and the other foundry cleaning room applications. The high friability and sharpness of the silicon carbide grain makes it an ideal additive in this AO cup for hard-to-grind materials. The type 11 flared shape features a flat grinding surface, making them ideal for heavy metal removal, grinding, transitioning, rough beveling, and removing cracks and flaws. A wide 1-1/2 in rim provides a large grinding zone to minimize grind time. The 5/8-11 arbor is designed for use on right angle die grinders, high-frequency grinders, and right angle grinders. Whether you are in a fab shop or a foundry, you can count on Tiger® AO cup rocks to get the job done fast and done right.