BOSCH NS2000 4-Piece Carbide Tipped Natural Stone Tile Bits Assorted Set for Drilling Natural Stone, Granite, Slate, Ceramic and Glass Tiles, Easy Application with No Water Required - Amazon.com
Bosch HCBG16 - 1/2" x 6" Blue Granite Hammer Drill Bit Carbide Tip - Hartmann Variety
Makita B-68878 5/8" x 6" Carbide Tipped Percussion Masonry Hammer Drill Bit
Amazon.com: UBESTHS 12Pcs Masonry Drill Bit Set, Concrete Drill Bit Set, 1/8 to 1/2 inch Professional Carbide Drill Bits Set for Glass, Brick, Plastic, Cement, Concrete, Granite, Wall, Wood, Tile Etc. :
1/4" x 4" Diamond Ground Carbide V-Tip Granite Drill Bit Hex Shank
Multi-Material Tile Drill Bits Set for Ceramic Porcelain Granite Marble 4mm-12mm | eBay