FREE SHIP United States.

We send to physical address only.

PO Box address not accepted.

Important Remind: The arbor of them is 5/8"-11 Thread.

NOT M14 Thread.

The 400 Pieces of 4 Inch / 100 mm velcro backer is 5/8"-11 thread (NOT M14).

They are all with water feed hole.

Remind: Velcro Backer's max capacity is 5000 RPM, please don't use it with high speed grinder/polisher.