The RIO® Powerflex® Wire Bite Tippet is a tough and flexible nylon-coated wire that is meant for sharp-tooth fish species such as pike, musky, barracuda, and bluefish. Knotable and supple, this wire allows you to tie directly to the fly easily. This 15 foot of interlocking spool has an elastic tippet restraint so it never becomes unraveled. The RIO wire bite tippet holds up to 30 pounds for heavy duty use.