• C3 (Ceramic) has 20% more material than regular flap discs.
• Z3 (Zirconia) has 20% more material than regular flap disc.
• Hybrid compact design (4-1/2", 5" and 6") - Flaps are compressed and compacted at a 4 degree angle for edge strength and longer life.
• C3 (Ceramic) for aggressive cutting action. Self-sharpening ceramic grain and cool grinding aid. Ideal for hard-to-grind materials including steel and other heat sensitive materials.
• Z3 (Zirconia) for fast, long-lasting grinding. Ideal for heavy-duty applications.