Kingsong, EUC are built to last and perform. High range, high speed, larger tires & best in class software is what makes Kingsong EUC's on the top of the list. Challenge your skills with King Song's wide selection of Electric unicycles available in 14", 16" and 18" wheel sizes. King Song EUC are best in class high performance Electric Unicycles. Many Wheel sizes to choose from 14", 16" and 18"