Tiger Paw 4.5 inch high density flap discs are designed for demanding metalworking applications like edge grinding on steel and stainless steel. Tiger Paw leverages 100% zirconia alumina grain that holds up under high temperatures and extreme pressure delivering high performance on heavy duty applications. The high density flap design is conformable to irregular surfaces. The type 29 conical disc shape maximizes surface contact when grinding between 15° – 35° for aggressive stock removal on flat surfaces while the 40 grit abrasive grain is best for edge beveling, chamfering, weld grinding, and blending with a right angle grinder. If you need maximum aggression for sustained stock removal, you need Tiger Paw flap discs.