FREE SHIP (United States)
The TWO PIECES OF 4 Inch / 100mm diameter velcro backer's arbor is 5/8"-11 female thread (NOT M14).
They are all with water feed hole.
This package carries 2 pieces.
Remind: Velcro Backer's max velocity / capacity is 5000RPM, please don't use it with high speed grinder/polisher.