This bosch pro x571 flap disc is a 125mm diameter disc with a fine 120 grit, designed for precision finishing and surface refinement on metal. The larger 125mm format allows you to cover more area during final-pass work, making it a practical choice for finishing larger components efficiently. Even at 120 grit, this disc delivers up to 1.5X faster performance than a bosch x431 flap disc, so finishing stages don't have to slow down your workflow. The advanced grain fusion of aluminium oxide and zirconia maintains sharpness throughout the disc's life, ensuring a consistent, quality finish every time. The x-cloth backing provides excellent stability during fine grinding work, giving you the controlled, smooth result that finishing demands. Compatible with x-lock and standard nut-and-thread angle grinders. Features and benefits: up to 1.5X faster than a bosch x431 flap disc fine 120 grit ideal for surface finishing and final-pass refinement larger 125mm diameter for efficient coverage on bigger workpieces advanced grain fusion of aluminium oxide and zirconia for enduring sharpness on hardened steel x-cloth backing ensures stable grinding position for faster work with no loss of finish compatible with x-lock and nut-and-thread angle grinders specifications: diameter: 125mm grit: 120g pack quantity: 1 contents: pack of 1