The Pro-Troll ProChip Fin Flasher offers a revolutionary spin and kick design combined with electronic EChip technology! The EChip consists of a small stainless steel tube with a stainless ball inside. At one end of the tube, there is a special ceramic crystal. As the ball strikes each end, the crystal produces a tiny electric impulse, which duplicates the nerve discharge of a baitfish and results in more strikes! Coupled with a unique 360-degree rotation and erratic action from the diagonal agitator fin, the fin flasher attracts more salmon and other big fish to your lures while trolling. The Pro-Troll ProChip Fin Flasher is a game-changer, helping you out-fish everyone on the water! EChip provides &';live bait&'; nerve impulses Kicker fin on the back creates erratic rolling action &';Easy Spin&'; ball-bearing swivel on each end ABS plastic blade provides brilliant colors and won&';t warp in the sun Most colors outfitted with glow or reflective tape Minimum drag when a fish is hooked Easily rigged with long or short leaders on downriggers, drop releases, or dipsies Recommended leader lengths: PC4: 13-20 in. PC8: 30 in. PC11: 48 in. for bait, 36 in. for hoochie Small size is also ideal for walleye and trout Larger sizes have the kicking power to run spoons and large bait rigs behind the flasher Can be trolled slowly to catch big hogs late in the season Manufacturer&';s limited warranty Qty. per Pack: 1.