Weiler Wolverine™ 6 in high density flap discs deliver a fast cut rate and consistent performance at a good value when grinding steel and other metals. The high density flap design is conformable to irregular surfaces while the flat type 27 disc shape is ideal when grinding between 0 to 15 deg. The 40 grit abrasive grain is best for edge beveling, chamfering, weld grinding and blending with an angle grinder. Wolverine™ Abrasive Flap Disc, High Density, Series: Value, 6 in Disc Dia, 5/8-11 UNC Center Hole Thread Size, 40 Grit, Coarse Grade, Zirconia Alumina Abrasive, Type 27 Flat Disc, Phenolic Backing, 10200 RPM Maximum