3M 7010496589 Polyimide Hybrid Bond Diamond Wheels and Tools, 101.6 mm Dia Wheel x 0.25 in THK Wheel, 1.25 in Center Hole, 220 Grit, Diamond Abrasive

The 3M™ Diamond Wheel 650HJ is used to generate the flute which is the helical or straight groove in the body of the cutting tools made from tungsten carbide. This hybrid bonded wheel offers high cut rates, good form retention, and increased thermal stability during higher temperature grinding operations.