The intermediate balls 37 and {HEAD ~ roll keys} 38 are provided in {TAIL ~ line} with the housing wall 9 while the notches 45 are indented inside the housing wall 9 
are provided in
The intermediate balls 37 and { HEAD ~ roll keys } 38 are provided in { TAIL ~ line } with the housing wall 9 while the notches 45 are indented inside the housing wall 9
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH