The insert & fins are held in place by use of grub screws which screw through the receptacle at an angle and apply {HEAD ~ pressure} to the insert and {TAIL ~ fin} together 
to
The insert & fins are held in place by use of grub screws which screw through the receptacle at an angle and apply { HEAD ~ pressure } to the insert and { TAIL ~ fin } together
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH