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 matched quad of 5881/6L6WGB tubes, by Tung-Sol, at exactly same ratings.

6L6WGB and 5881 are interchangeable name for these tubes.

Test Ratings: 90 and 90 on my Jackson 648s tester, minimum is 70, new tubes at about 95-100 (some times new tubes are in slightly lower ratings for the sake of long life).

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.