"NSN USED TO PURCHASE A MINIMUM OF 40CONTAINRS TO A MAXIMUM OF 79CONTAINERS;CERTIFICATION PWA 1333,GE A50TF155 AND RR 9507/21;RC 30-35 HARDNESS;1200 PSI MINIMUM STRENGTH;GRIND ONLY,USE SILICON CARBIDE OR DIAMOND WHEELS.MAGNESIUM STABILIZED ZIRCONIUM OXIDE POWDER,WIDELY USED IN AIRCRAFT ENGINE INDUSTRY FOR THERMAL BARRIER COATINGS.OUTSTANDING RESISTANCE TO THERMAL SHOCK AND PARTICLE EROSION"