SUNLINE FC100 is a new concept 100% fluorocarbon leader that has been specifically designed to be used with braid. The surface hardness has been enhanced to prevent your braid cutting into your leader, at the same time the line has remained supple creating minimum interference on lure movement. The hardened outer surface also gives outstanding abrasion resistance against rocks, debris, weeds, and the fish’s body. FC100 has excellent knot strength and has been manufactured to suit two of the most common and easiest knots to tie, the uni-knot and the blood knot. Combine these features with a near invisible line in the water and you have a near perfect trace line for any lure from softbait to game lures.