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If you want to feel like a real badass at the gym, ditch your regular kettlebells for something a little more intense — Ironskull Fitness [2] has upgraded the typical all-black equipment with designs to get your best workout.

While nothing says beast mode like an all-black skull kettlebell, options from Ironskull Fitness [4] include camouflage and Frankenstein, and come in a variety of weights from 13-88 pounds. There's even a 215-pound Megaskull [5] for the serious beasts out there. If you want to expand your kettlebell collection even more, check out these iron kettlebells with the faces of wild animals [6]. Beast mode: activated.