Black Hawk Zirconia Resin Fiber Grinding & Sanding Discs, 36 Grit, 5-Inch x 7/8-Inch Arbor, Pack of 25

These discs are as good as other more expensive brands I have used in the past. They are long lasting and not bad about loading up. I will definitely be ordering again!

The discs remained flat in shipment and did not cup which makes them way easier to work with.

All good...

Look good haven’t used them yet.

These disks are very stiff making them difficult to attach to the grinder's backing pad. After they're attached, they were able to rip through fiberglass, making short work at removing the excess material.