With patented tapered wire, the Vibra Shaft Dirty Water Double Colorado with the special made deeper cupped back Colorado blade is unmatched in water displacement. Moving more water with less effort makes a great spinnerbait. The reason is, the tapered wire transfers all the vibration to the end where the blades are. When you combined that with the deeper cupped Colorado blade you get a spinner bait that puts off more vibration at a much controllable speed. By having the front painted Colorado blade, you now get extra flash with the vibration