The plunger includes {HEAD ~ a proximal end} and {TAIL ~ a distal end} having a first set of annular ridges formed thereon 
The plunger includes { HEAD ~ a proximal end } and { TAIL ~ a distal end } having a first set of annular ridges formed thereon
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH