Tiger AO cups, cones and plugs are designed to deliver the right combination of performance and value. The aluminum oxide grains, along with a strong bond, provide a long product life and a consistent cut rate for grinding metal. The Type 11 cup wheels for grinders are precision balanced to ensure smooth, vibration-free operation and reduce operator fatigue, while wearing at the appropriate level to maximize grind rates. An innovative safety nut locks in place to increase safety and prevent separation. Zinc-plating prevents oxidation, which eliminates contamination, and keeps threads clean for easy mounting and removal. The cup wheels are available in 4-, 5- and 6-inch diameters and are ideal for heavy metal removal, grinding, rough beveling and removing cracks or flaws.