Returning to FIG 10, it is seen that the nuts 218, 230 are elongated in length for easy grasping and include {HEAD ~ wings} 234 which enable {TAIL ~ a person} to easily thread it on and off 
enable
Returning to FIG 10 , it is seen that the nuts 218 , 230 are elongated in length for easy grasping and include { HEAD ~ wings } 234 which enable { TAIL ~ a person } to easily thread it on and off
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 OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH