The camshaft 3, wherein {HEAD ~ the bore} includes {TAIL ~ a third radial inner surface area} at the connecting portion that is frictionally engaged with the outer surface of the first shaft 
includes
The camshaft 3 , wherein { HEAD ~ the bore } includes { TAIL ~ a third radial inner surface area } at the connecting portion that is frictionally engaged with the outer surface of the first shaft
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH