Features and Benefits:

• High performance aluminum oxide grain for long life and high material removal
• High grain concentration for aggresive grinding action and smoother running wheels
• Proprietary material mix ensures durable long life wheels
• 3 full sheets of fiberglass for durability and safety
• 4-1/2&quot diameter 1/4&quot thickness 7/8&quot arbor size

4-1/2 in. x 1/4 in. x 7/8 in. High Performance Metal Grinding Wheel.