Foot Pro 40 Grit Blue Zirconia 10" Expander Wheel Belt, qty discount for purchasing by the box (10 belts per box)
Zirconium OXIDE - More durable, good for shoe and heavy grinding
A particulate material that gives better life than straight AO, working well for general purpose grinding of many types of material. Often has coolant coating such as with 3M 577 or 877 belt series.