... 4,5,6,7,8,9,... 1,Application:1,Suit for drilling medium to medium-hard formations.2,Evolute asymmetrical blade ... cooling and cuttings evacuation requirements with available hydraulic flows.Allows for higher flow rates with minimal increase in pump pressure. ... footage drilled in abrasive applications 2.details: Bit typeMain bit size(mm)Rock coefficientPDC core drill bitSingle pipe75/54.5 94/74 113 ...