It is important that the connecting area of cross arm 10 is filled with {HEAD ~ the mineral} casting to optimize {TAIL ~ the vibration} damping effect 
casting to optimize
It is important that the connecting area of cross arm 10 is filled with { HEAD ~ the mineral } casting to optimize { TAIL ~ the vibration } damping effect
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH