Zirconia alumina abrasive is self-sharpening and more durable than aluminum oxide;Type 27 depressed center flap style is used for weld blending, deburring, deflashing, edge chamfering, stock removal, and grinding and finishing in one step;Phenolic backing for durability and reinforcement of the disc;High-density abrasive and larger flaps for prolonged life over standard flap discs;Threaded hole for attachment to grinding tools

• Weiler Big Cat High Density Abrasive Flap Disc, Type 27, Threaded Hole, Phenolic Backing, Zirconia Alumina, 4-1/2 Dia., 60 Grit (Pack of 1)
• 4-1/2 inches

Weiler Big Cat High Density Abrasive Flap Disc, Type 27, Threaded Hole, Phenolic Backing, Zirconia Alumina, 4-1/2 Dia., 60 Grit (Pack of 1)Weiler Corporation