Nomad Design Madmac Sinking High Speed Trolling Baits have an amazing vibrating action even at very low speeds due to the Autotune system. The Madmacs Features the patent pending Autotune system which allows it to always troll straight and to run perfectly and with an amazing action at a huge range of speeds. The ability to troll at all speeds makes this a must have lure in every spread. The Madmacs will run at a depth of around 8-15ft when trolled at slower speeds and around 4ft depth when trolled super fast. Featuring a machine-stamped stainless steel plate & full body foam core construction, it is one of the toughest lures available, and is up to any challenge. Fitted with super strong BKK hooks and Heavy Duty split rings the Madmacs is ready for battle.