FREE SHIP (United States).

Remind:

Their arbor is 5/8"-11 Female Thread.

NOT M14 Thread.

This package carries (a)-(d): 

(a)  1 Piece of F30 (1 1/4" / 30 mm) for 30 mm (1-1/4") high / thick stone or travertine or concrete counter top / tile edge router bit to do ogee shape bullnose (with 5/8"-11 Female Thread arbor).

(b) 1 Piece of 2" / 50mm Diameter Diamond Core Bit / Hole Saw for stone concrete hole cutting (with 5/8"-11 Female Thread arbor). 

(c) 1 Piece of 2" / 50mm Diameter Diamond Zero tolerance Grinding drum wheel for stone concrete inner hole coarse grinding / polishing, shaping, enlarging  (with 5/8"-11 Female Thread arbor). 

(d) 6 Pieces of 2" / 50mm Diameter Wet Polishing Drum for granite marble concrete sink / basin hole / sink cutouts / tight radius (with 5/8"-11 Female Thread arbor)

They are:

1 Piece of Grit 100 200 400 800 1500 3000.

Fits on wet / water-fed polisher, Wet and Dry Use, Wet use recommended.
-Vertical oscillation recommended for even wear;
-Ideal speed (of polisher / grinder) capacity is  4000 RPM, Not be higher than 5000 RPM..

Wet Diamond Polishing Drum Wheel is designed for wet polishing of sink cutouts or tight radius.