Inox-Prime Wheel Is Made With White Aluminum Oxide And Is A Pure Cutting Wheel. The 3/32″ Is Offered For Applications Where A Thin Wheel Is Not Required Or Not The Right Fit For The Application. The Thicker Wheel Will Provide Longer Life. Use The 1/8″ Below For Notching. The Wa Grain Is Contaminant Free And Can Cut Steel And Stainless And Can Be Used In Aeronautic, Nuclear And Food Industry Applications.