2" Zero Tolerance grinding Drum core bit Convex Blade cup wheel stone concrete

(b) 1 Piece of 4" Diamond Turbo Grinding cup wheel for stone concrete (velcro backed, use with the aluminum backer). and 1 Piece of 4" aluminum backer / pad holder (5/8"-11 Thread arbor). (d) 1 Piece of 2" Diamond core bit / hole saw for stone concrete sink hole cutting (5/8"-11 Thread arbor).

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