This premium-quality 40 grit resin bonded zirconium oxide flap disc offers enhanced cutting performance and efficiency. It has a self-sharpening feature which increases high stock removal and durability. The strong plastic backing allows increased flexibility and fast cutting action on medium to high pressure applications. The M14 connection allows for the quick changing of discs. The plastic backing can be trimmed to extend service life. Designed for contoured and flat-edged surfaces. Ideal for sanding, grinding, removing rust and weld preparation of metal, carbon steel, stainless steel, sheet metal, wood and plastic. Compatible with 115mm angle grinders including Stock No. 56488.