This Bosch PRO X571 Zirconium Abrasive Flap Disc is a 125mm diameter disc with a 120g (fine) grit, engineered for fine finishing, light surface blending, and high-quality surface preparation on metal. The fine 120g grit is the ideal finishing-stage choice, producing a smooth, consistent surface ready for painting, coating, or quality inspection. At 125mm, this disc covers more area per pass than the 115mm equivalent, making it a practical choice for fine finishing on larger panels or fabricated sections. Even at this fine grit level, the zirconia and aluminium oxide grain fusion keeps pace with demanding professional use, delivering up to 1.5x faster results than the Bosch X431. The X-cloth backing adds the stability needed for precise, even finishing work. Features and Benefits: • Fine 120g grit for smooth finishing and surface preparation ahead of coating or inspection • Advanced grain fusion of aluminium oxide and zirconia for efficient performance, even on hardened steel • Durable X-cloth backing for a stable grinding position with no loss of finish • 22.23mm bore compatible with standard locking nut angle grinders Specifications: Diameter: 125mm Grit: 120g Bore: 22.23mm