The channel has an entrance opening in a direction radially of the end portion which is opposite {TAIL ~ the direction} in which {HEAD ~ the handle portion} is angled from the end portion 
in
The channel has an entrance opening in a direction radially of the end portion which is opposite { TAIL ~ the direction } in which { HEAD ~ the handle portion } is angled from the end portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH