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modernyoyos
Amazon.com: YoYoFactory ONE Yo-Yo - Blue (Modern Spinning yoyo, Beginner to pro, 2 Different Level Ball-Bearings Included, Comes with String) : Toys & Games
Metal/Modern Fixed Axle Yoyos - YoYoTricks.com
A Guide to Modern Yoyos
YoyoFactory Arrow Yoyo for Beginners — Motmot Yoyos & T-Shirts