• High performance aluminum oxide grain for long life and high material removal
• High grain concentration for aggressive grinding action and smoother running wheels
• Proprietary material mix ensures durable long life wheels
• Three full sheets of fiberglass for added durability and safety
• 6 in. x 1/4 in. A24R-Grit High Performance Metal Grinding Abrasive - DW4624
(California Prop 65)