{TAIL ~ The string engaging assembly} relatches the mandrel to {HEAD ~ the drill string} when the drill string is moved away from the object and rotated in a second direction 
{ TAIL ~ The string engaging assembly } relatches the mandrel to { HEAD ~ the drill string } when the drill string is moved away from the object and rotated in a second direction
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH