At first, Berkley Vanish Transition Fishing Line appears to be another clear fluorocarbon. But when exposed to sunlight, it transitions to either a deep gold for maximum visibility outside the water. Below the surface, it vanishes into its surroundings. The result is, fish aren't spooked and you can detect strikes faster. Built with the same durability and abrasion resistance as other fluorocarbon lines, it's like having two lines in one. These 250-yd. filler spools are great for filling a couple reels and tying leaders. Available: 4-, 6-, 8-, 10-, 12-, 14-lb. test. Color: Gold.