The offset serves to provide {HEAD ~ clearance} between {TAIL ~ the zipper pull} and the body of the Self Aligning Zipper so that the zipper pull does not interfere with the operation of the Self Aligning Zipper 
between
The offset serves to provide { HEAD ~ clearance } between { TAIL ~ the zipper pull } and the body of the Self Aligning Zipper so that the zipper pull does not interfere with the operation of the Self Aligning Zipper
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH