The adjusting device 1 wherein said first engaging portion is a rod and {HEAD ~ the second engaging portion} is {TAIL ~ two hook elements} 
is
The adjusting device 1 wherein said first engaging portion is a rod and { HEAD ~ the second engaging portion } is { TAIL ~ two hook elements }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL