Thanks to the Anti-Tangle System, rollover is a thing of the past. Especially when casting far for sea trout or on large trout lakes, this problem occurs. Simply tie the Trout Attack Anti Tangle Sbirolino System to the main line and hook the leader into the attached 3-fold safety swivel at the bottom - done. Anti Tangle Sbirolinos from Trout Attack, for more success on the trout lake. Content: 1 piece.