On 06 February 2014 the South African Revenue Service (Sars) announced the substitution of tariff subheading 7320.20 (helical springs), through the insertion of tariff subheadings 7320.20.10 and 7320.20.90, which serve to increase the "General" rate of customs duty on certain helical springs from 5% ad valorem to 10% ad valorem.
Tariff subheading 7320.20.10 reads "-- With a wire diameter of more than 1.32 mm but not exceeding 2.43 mm” of which the “General” rate of customs duty is 30% ad valorem, and tariff subheading 7320.20.90 reads "-- Other", of which the “General” rate of customs duty is 5% ad valorem.