Riverge Grand Max Fluorcarbon:

Riverge Grand Max is one of the strongest flurocrabons around.
It is practically invisible in water, they sink readily without treatment at about 3 times the speed of nylon.The abrasion resistance and incisibility of Grand Max ensures that fish are neither "spooked " nor lost.

Grand Max is slightly softer than Riverge and has a higher breaking strain for diameter. It has been extensively tested and using standard knots found to knot easily and be entirely dependable.