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