4” 3-Step Wet/Dry Diamond Polishing Pads for Granite Marble Stone B13 router bit
(5/8"-11 Female Thread arbor. (b) 1 Piece of 4" PVC Velcro Backer (5/8"-11 Female Thread arbor). Pad Holder's max velocity / capacity is 5000 RPM. Wet use make its life longer).