VARIVAS AVANI CASTING PE Si-X 8This Tuna casting PE line was developed in collaboration with Sato Ichiro, the leading authority on Tuna casting games. The special heat resistant material (Si X) provides durability which was previously unimaginable. To prevent line breakage, special heat resistant materials are kneaded into the PE to protect the fibers from frictional heat. The tension of the line reduces the loop width of the line released from the spool and prevents line related