The Performance Tool W50011 flap discs are an essential tool for anyone who demands the best in performance and durability. Featuring a high grade zirconium abrasive that is self-sharpening, these discs provide up to 5 times longer lifespan compared to standard aluminum oxide discs. The durable fiberglass back absorbs vibration and is lightweight, ensuring superior performance and extended lifespan. Versatile enough to use for grinding, stock removal, edge chamfering/beveling, and weld blending, these 4.5 inch type 29 angled flap discs are compatible with most 4.5 inch angle grinders with a 7/8 inch hub. Ideal for heavy-duty applications that require fast and efficient material removal, these discs work best under high pressure. Manufactured using ISO9001 standards and quality certified by MPA-Hanover, the Performance Tool W50011 flap discs ensure top-notch performance and durability.