Why are there small fighting/cork butt ends on euro-type nymph rods?

Best Euro Nymphing Fly Rods of 2024 - Trident Fly Fishing

Best 10' 3wt fly rods comparative review

Why are there small fighting/cork butt ends on euro-type nymph rods?

Euro Nymphing with Streamers, from a Boat

Thomas & Thomas Contact II 1002-4 Fly Rod

CORK FIGHTING BUTT

You can find my review of these rods at on our channel at this link. , The Ideal Nymph series from Diamondback is the brainchild of Joe

Diamondback Ideal Nymph Fly Rod

Competition MKII Series Fly Rod - Euro Style Nymphing – Cortland Line Company

Best Euronymphing rods -Our guides pick 6 rods and review

You can find my review of these rods at this link. , Thanks to Austin Curtin for several of the product photos., A new favorite here at Tactical Fly

Adams XTZ Euro Nymph Rod