In an equally effective embodiment {TAIL ~ the single bead filler} extends radially outward beyond {HEAD ~ the radial extent} of the outer filler strip 
In an equally effective embodiment { TAIL ~ the single bead filler } extends radially outward beyond { HEAD ~ the radial extent } of the outer filler strip
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH