This Bosch PRO X571 Zirconium Abrasive Flap Disc is a 115mm diameter disc with a 60g (medium) grit, offering a well-balanced combination of stock removal speed and surface finish quality for everyday metal grinding tasks. The 60g grit is a versatile mid-range choice, suitable for general-purpose grinding, blending welds, and smoothing surfaces where you need a cleaner result than coarse grit allows. Its 115mm size makes it perfectly suited to standard compact angle grinders. With the advanced grain fusion of aluminium oxide and zirconia, this disc grinds up to 1.5x faster than the Bosch X431. The X-cloth backing adds rigidity and stability, so you can work with confidence at speed. Features and Benefits: • Medium 60g grit for versatile grinding, blending, and surface smoothing • Advanced grain fusion of aluminium oxide and zirconia for fast stock removal on hardened steel • Durable X-cloth backing ensures a stable grinding position with no loss of finish • 22.23mm bore compatible with standard locking nut angle grinders Specifications: Diameter: 115mm Grit: 60g Bore: 22.23mm