The ProChip 11 flasher is 11 inches long and has a diagonal kicker fin on the back side. The photo shows the back side of the flasher. The kicker fin causes the flasher to kick and spin much more than a conventional 11 inch flasher. It can also be trolled as slow as one mile per hour and it still kicks and spins. This is a big advantage late in the year when the large salmon will not hit a fast trolled bait. The flasher is made of ABS plastic which gives it more brilliant colors and it also will not warp in the sun. It has Pro-Troll's stainless "Easy Spin" ball bearing swivels on both ends and contains the Pro-Troll Electronic EChip for more strikes.