Weiler Wolverine 4.5 inch conical flap discs deliver a fast cut rate and consistent performance at a good value when grinding steel and other metals. The type 29 conical disc shape maximizes surface contact when grinding between 15∞ ñ 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 an angle grinder. Wolverine is an aggressive, get it done product line for everyday general purpose use.