. . . "The EX-System is a line of customizable yo-yos with interchangeable components for changing the look, feel, and overall playing style of the yo-yo. Another advantage is the ability to replace damaged or worn-out components, especially in the case of the Skyscraper offstring yo-yo."@en . "The EX-System is a line of customizable yo-yos with interchangeable components for changing the look, feel, and overall playing style of the yo-yo. Another advantage is the ability to replace damaged or worn-out components, especially in the case of the Skyscraper offstring yo-yo."@en . "YoYoJoker EX-System"@en . .