Two steel rails
run the length of the vehicle, long rails- not bent , no cracks, no dents, not broken, no authorized welds, and drill holes.
Cross members
Connect the two rails and provide strengthand support to the frame. Cross members well bolted to the long rails-missing bolts and nuts, not bent, no cracks, no illegal welds and holes
Cat walk
narrow walkway used to allow driver to stand or move behind tractor cabin. Catwalk in good condition, solid, not bent, securely mounted to the tractor frame. No oil, no grease or ice/snow on catwalk