"NSN IS USED TO PURCHASE A MINIMUM OF 20CONTAINRS TO A MAXIMUM OF 59 CONTAINERS;99.5 AL O,ANGULAR/BLOCKY FUSED AND CRUSHED,-31 +3.9 UM;RC 65-66 HARDNESS;TEXTURE/FINISH AS SPRAYED 50-200 GROUND 15-20 BRUSHED 15-160 LAPPED 1-4;COATING NUMBERS P105SFP-10, P105SFP-12, P105SFP-13 AND P105SFP-15;HAS HIGHEST DIELECTRIC STRENGTH OF ALL ALUMINUM OXIDE COATINGS.EXCELLENT REFRACTORY PROPERTIES.SUPERFINE WHITE ALUMINA.PRODUCES HARDER,DENSER COATINGS HAVING GREATER LOW-TEMPREATURE WEAR RESISTANCE. GREATEST WEAR RESISTANCE OF THE OXIDE CERAMICS.EASILY FINISHED TO VARIOUS SURFACE TEXTURES AND FRICTION CHARACTERISTICS NEEDED IN THE TEXTILE INDUSTRY"