Atom Juke wheels have been a staple of the derby and skating industry since they launched back in 2011. The Atom Juke 4.0 (released in 2016) features several changes in the design. Atom took the high-performance urethane of the original Juke wheels and 'tweaked' the chemistry with proprietary ingredients to meet the demands of today's modern skater! These wheels have increased grip and roll, better grip for plow stops, and more control of your skates! Also available in nylon core.