In addition, the invention provides a rotatable insert which includes {HEAD ~ a base assembly} configured to receive an actuator, advantageously the base assembly and {TAIL ~ actuator} of the present invention 
In addition , the invention provides a rotatable insert which includes { HEAD ~ a base assembly } configured to receive an actuator , advantageously the base assembly and { TAIL ~ actuator } of the present invention
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH