1 1/4 Inch Diamond Core Drill Bit Granite Concrete Stone Marble 17 Polishing Pad
Drills/Cores through Concrete, Granite, Masonry, Stone, Marble. Grinder's speed must be lower than 5000 RPM when using wth polishing pad. And 1 Piece of 4" aluminum velcro pad holder (5/8"-11 Female Thread arbor).