... diamond core bits which are commonly used in mineral exploration, site investigation and water well drilling. We have impregnated diamond type, surface set type, electroplated diamond ... , LTK48, LTK60,EWK, AWK.Note:Impregnated Diamond Core Bit:Impregnation Depth: 6-12mm; 6mm is ... " profile, "Semi-round" profile, "Cross" profile...Surface Set Diamond Core Bit:Bit Crown Profiles: "Semi-round" profile, " ...