Each country of origin of manufacturing has different Tariff rate. For example. U.K origin will pay 10%. Please find out this rate yourself. Shipping to non-U.S. is tariff free. You do not pay anything. 
Most of my tubes were U.S. made. So, you are free of tariff if shipping to U.S. Thanks for the attention.
Due to the new 35% U.S. Tariff on all items shipped to the USA, Buyer will pay for this new burden. My prices have been lowered to the minimum, and cannot be jeopardized by this new tariff, hope buyers will understand, thank you.

One lot of six 6BL7GT and 6BL7GTA tubes, four by Ge, Marconi and Westinghouse each.

Mostly are new.

Test Ratings: 100 to 110 on my Jackson 648s tester, minimum is 70.

SHIPPING: Shipping to USA and Canada only with tracking. For Europe and Far East countries, please contact the Seller to get permission to buy ( due to higher tracking fees charged by Canada Post).

Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.