ZIMX HB1 & HK4 Kart Bundle: Our Latest UL2272 Certified Hoverb oard / Swegway, with LED wheels which is UL2272 Certified, the highest hoverboard safety standard, bundled up with our HK4 Hoverkart. UL-2272 : Fully Certified Hoverboard, Highest Hoverboard Safety Standard.
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