Product Description The Twili-Tip provides a gentle radius at the rod tip to reduce drag and extend the life of wire line. Its bright yellow end makes it easy to see the rod action. The Twili-Tip comes with 6 inserts of different sizes to place over the rod tip (after removing the old tip-top). Once the correct sized insert is put onto your rod tip you can slip the Twili-Tip into the insert. These Twili-Tips are very popular when trolling with wire line.