20MM PTFE/SILICONE SEPTUM (9301-0719) 100/PK (EA)
https://www.taacf.org/shop/rw2-1030-46306-20mm-ptfe-silicone-septum-9301-0719-100-pk-ea-313144
https://www.taacf.org/web/image/product.template/313144/image_1920?unique=07fba14
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This 20MM is guaranteed a 20MM with the use of 100/PK and directly supplied to your lab by Gentaur's warehouse.
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30-day money-back guarantee
Shipping: 2-3 Business Days