{HEAD ~ The undercut groove} 323 is coplanar with {TAIL ~ the bottom surface} of the race 320 and extends a depth “DG” into the transverse side wall 321 b 
is coplanar with
{ HEAD ~ The undercut groove } 323 is coplanar with { TAIL ~ the bottom surface } of the race 320 and extends a depth “ DG ” into the transverse side wall 321 b
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH