What is the item description for 730290 of HScode Mexico?
The description of the item 730290 of Mexico HScode: "Check-rails, rack rails, chairs, chair wedges, rail clips, bedplates and ties and other specialized material for the jointing or fixing of railway or tramway track, of iron or steel (excl. rails, sleepers ""cross-ties"", and switch blades, crossing frogs, point rods and other crossing pieces)"