FETESNICE Yoyo Professional Competitive Yo-yo Bi-Metal Yoyos, Unresponsive Yoyo Trick Yoyo for Pros, Aluminum + Ultra-Wide 304 Stainless Steel Ring YO-YO+10 Ball High Precision Yoyos Bearing-Dark Blue

"The yoyo ball body is made of 6061 aluminum alloy with an enlarged double-ring design, which effectively improves the stability of yo-yos rotation in the air and increases yo-jo spinning speed and long-lasting idling ability, allowing you to complete more A1/A3/A5 and other difficult tricks in your daily training or athletic competitions.

This bi-metal yoyo has excellent durability, 6061 high-quality aluminum alloy sphere paired with a new oversized stainless steel ring design makes this yoyo able to withstand shocks and drops without being easily damaged.

This bimetallic yoyo can help you easily complete more complex string skills, including those challenging A1, A3, A5 and other advanced skills."