Moore's Discs - Adalox w/ Pin Hole
A to Z Jewelry Tools & Supplies(100 pieces per box)
Made with premium quality aluminum oxide on a paper backing, Moore's Discs are thin and flexible to give you excellent results even in hard to reach places.
Moore's Discs with pin hole centers are meant to be used with screw mandrels at a max speed of 20,000 rpm, but are also available with brass centers for use with snap-on mandrels.