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