... , electricians, builders, fencing contractors, pest control industry, air condition core drilling machinesAll the gear that you need to start your own ... cannot have an anchor hole.Capable of drilling holes from 8mm ~102mm. 4. 20 diamond core drill bits .20,22,24,28 ... .run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); concrete or stone diamond core drilling machines