Duncan Imperial Yo-Yo for beginners with narrow string gap, steel axle, plastic body, looping play, assorted colors. Colors are picked at random. The Imperial is an all-American looping yo-yo classic. A timeless favorite, the Imperial has been the yo-yo of choice for many generations of beginning yo-yo players. The Imperial features a narrow string gap, steel axle and durable plastic body in bold colors. It's great for learning the basics of yo-yoing.