Flap disc with the X-LOCK mount design – offers a faster, fixed mount;

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

Material: Zirconia

Type：Type 27 and Type 29

Diameter：4-1/2" and 5"

Backing：Fiber Glass Backing

Grits：36-120