Weiler Tiger Saber Tooth™ Ceramic High Density Flap Discs Top coat protects high-value parts stainless steel parts from heat discolorization and also prevents loading on soft alloys like aluminum. Ceramic grains utilize a crystalline structure that is designed with millions of fracture points that self-sharpen at a higher rate than other grains. Result is a high material removal rate, cool grinding, and reduced friction at less pressure which reduces operator fatigue. Designed for maximum performance when grinding aluminum, stainless steel, and other hard-to-grind metals. Pack of 10