Bosch BOS-FDX X-LOCK Arbor Type 27 40-120 Grit Flap Disc


Bosch's flap discs feature the X-LOCK mount, offering a wheel change that's up to five times faster than conventional interfaces. There’s an audible snap when mounting an X-LOCK wheel on an X-LOCK grinder. The wheel mounts properly without the need for a spanner wrench or flange nuts for no losable parts. The wheel is released from the grinder with the pull of a lever. Bosch flap discs are made with high-quality Zirconia grit for exceptional speed and durability in tough environments for metal grinding or blending applications. This coarse grit flap disc features a plastic backing to reduce the risk of material gouging.


  • Flap disc with the X-LOCK mount design – offers a faster, fixed mount and high-quality Zirconia grit
  • X-LOCK wheel change – features snap-on mounting and wheel-release lever for change-out that's up to five times faster
  • Tool-free disc swap – the wheel mounts properly without the need for a spanner wrench or flange nuts, for no losable parts
  • Backward compatible – Bosch X-LOCK flap discs are backward compatible with standard 7/8 In. arbor mounts
  • Durable material – specially formulated Zirconia grit provides for more durability and faster stock removal
  • Application focused – designed specifically for fast material removal and use with small angle grinder
  • Precision manufacturing – optimized flap design for less vibration and improved grinding speed

Grits Available:

  • 40 Grit
  • 60 Grit
  • 80 Grit
  • 120 Grit