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 80 grit abrasive grain is ideal for blending, rust removal, cleaning, and finishing with an angle grinder. This disc offers a metal 5/8" - 11 nut that allows for quick changeovers and prevents the disc from sticking to the spindle. Wolverine is an aggressive, get it done product line for everyday general purpose use.