... PDC concave drill bit/PDC boring bit Female/Outside/API threading sizes optional Fast delivery,high ... 108,113,133,153Wings:3WConnection:Male or Female AW,NW Connector or API REG PDC drag bitProduct ... 65,φ75,φ94,φ113,φ133,φ153Wings:3WConnection:NW Connector/API REGNon-standard sizes can produce as ... ,φ133,φ153Group:6G /8G /10G /12GConnection:NW Connector or API REGNon-standard sizes can produce as customer ...