Electroplated Diamond Core Drill Bits Mainly used for drilling Glass, Marble, Granite, Tile, Ceramic and ... ECDB381-1/238CPC-ECDB451-3/445CPC-ECDB50250Electroplated Diamond Core Drill Bits Mainly used for drilling Glass, Marble, Granite, Tile, Ceramic ... .minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Electroplated Diamond Core Drill Bits for marble, granite and glass