On the securing rod 309, at least two support bars 313 are fixedly mounted, and {TAIL ~ a step plate} 201 is bolted to the support bars with {HEAD ~ at least four bolts} 
On the securing rod 309 , at least two support bars 313 are fixedly mounted , and { TAIL ~ a step plate } 201 is bolted to the support bars with { HEAD ~ at least four bolts }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD