The description of the item 73202003 of New-Zealand HScode: Helical springs, of iron or steel (excl. flat spiral springs, clock and watch springs, springs for sticks and handles of umbrellas or parasols, and shock absorbers of Section 17) : For use in the assembly of motor vehicles as may be determined by the Minister in accordance with Section 14 of this Act : For the vehicles of headings 87.02 and 87.05, and road tractors of heading 87.01 and vehicles of heading 87.04 of a g.v.w. exceeding 3,500 kg but not exceeding 10,500 kg