A second hub assembly is sealingly engageable with {TAIL ~ a second axial opening} on the other side of {HEAD ~ the tire} 
A second hub assembly is sealingly engageable with { TAIL ~ a second axial opening } on the other side of { HEAD ~ the tire }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD