ITEM NAME:10pcs 8-50mm Diamond Coated Saw Bits Tiles Marble Glass Granite Driller #gib Store Home Promotion Hot Item Add to Fav.10pcs 8-50mm Diamond Coated Core Hole Saw Bits Cutter Tiles Marble Glass Granite Driller. Always use lubricant (water) or driller will burn. 10pcs 8-50mm Diamond Coated Saw Drill Bits Tool for Tiles Marble Glass Granite Drilling.