The geometry of {HEAD ~ the circumferential ridge} or groove can optionally be modified to increase or decrease the amount of {TAIL ~ force} required to effect insertion or removal of the ferrule inside the cavity 
The geometry of { HEAD ~ the circumferential ridge } or groove can optionally be modified to increase or decrease the amount of { TAIL ~ force } required to effect insertion or removal of the ferrule inside the cavity
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH