Depressed Center Wheel Type 27 5 in Dia 1/4 in Thick 7/8 Arbor Hardness N CGW Abrasives Depressed Center Wheels- 1/4 Grinding Type 27 WARNING: This product can expose you to glass wool fibers (inhalable and biopersistent) crystalline silica (airborne particles of respirabl a chemical known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov Grit: 24 Abrasive Material: Aluminum Oxide Thickness [Nom]: 1/4 in Speed [Max]: 12 300 rpm Hardness Grade: N Applicable Materials: Low Grade Steel; Metal Used With: Air & Electric Grinders Wt.: 0.06 lb Dia. [Nom]: 5 in Applications: Grinding Arbor Diam [Nom]: 7/8 in Tool Shape: Type 27 Quantity: 25 per carton