In {TAIL ~ the preferred embodiment}, {HEAD ~ the oblique angle} formed by these end surfaces is 15° from a plane positioned normal or perpendicular to these axes 
In
In { TAIL ~ the preferred embodiment } , { HEAD ~ the oblique angle } formed by these end surfaces is 15 ° from a plane positioned normal or perpendicular to these axes
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH