Bulbs may vary in actual settings depending on availability eg a 21/5w may be substituted for a 23/8w bulb of the same voltage and size.
Shipping to the United States has been suspended due to the new US tariff rules for postal shipments - effective 29 August 2025. See the Australia Post website full details and current status: Important notice: New US tariff rules for postal shipments – Effective 29 August 2025