3M 7000139084 Cloth Sanding Belt, 3/4″ W x 18″ L, Zirconia Alumina, 40 Grit-(Case of 200)

Alumina zirconia mineral with a grinding aid provides aggressive cutting power
Heavyweight cloth backing provides durability for high production environments
Backed with a heavy, water-resistant polyester backing that stands up to high-pressure applications and edge work
The durable backing ensures long life and supports both wet and dry operations