Al2O3 High Purity Powder 99.9% Aluminium Oxide High Temperature Resistance Lubricating Nano Ceramic Powders about 1 Micro Meter Al2O3 High Purity Powder 99.9% Aluminium Oxide High Temperature Resistance Lubricating Nano Ceramic Powders about 1 Micro Meter. Sale price : $18.50 Category : Tools