{TAIL ~ The spline connection} permits {HEAD ~ the flange} to move axially while maintaining the drive coupling 
{ TAIL ~ The spline connection } permits { HEAD ~ the flange } to move axially while maintaining the drive coupling
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH