... jobs on finished surfaces, such as tap holes in kitchen bench tops , bathroom or tiled floors or any where you cannot ... hole.Capable of drilling holes from 8mm ~102mm. 4. 20 diamond core drill bits .20,22,24,28,50,63,76 ... .run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); concrete or stone diamond core drilling machines