... roadway construction etc.PDC concave drill bitProduct Code:NW-3Standard Size: 56,60,65,75,78,89 ... 113,133,153Wings:3WConnection:Male or Female AW,NW Connector or API REG PDC drag bitProduct Code ... 60,φ65,φ75,φ94,φ113,φ133,φ153Wings:3WConnection:NW Connector/API REGNon-standard sizes can produce as ... 94,φ113,φ133,φ153Group:6G /8G /10G /12GConnection:NW Connector or API REGNon-standard sizes can produce as ...