Yo-yos by Duncan. Details: The Duncan Toys Imperial yo-yo is the original, All-American 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. The plastic construction means more resistance against accidental falls and hard knocks on the floor—a few things associated with getting a hang of using the yo-yo. The Imperial is great for learning the basics of yo-yoing but can be used by all skill levels. Makes a great stocking stuffer, party favor or small gift. The original and #1 looping yo-yo of all time. First introduced in 1954, Imperial has become world renowned as a classic toy. Featuring a narrow string gap, steel axle and durable plastic body produced in bright colors, Imperial is great for beginner yo-yo players learning the basics of yo-yo play.