The anti rotation element has {HEAD ~ a seat face} which sits on the lateral section and a guide body which protrudes beyond the lateral section in {TAIL ~ the radial direction} 
The anti rotation element has { HEAD ~ a seat face } which sits on the lateral section and a guide body which protrudes beyond the lateral section in { TAIL ~ the radial direction }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL