Take your yo-yo skills to the next level with this advanced U-shaped -precision 10-ball KK bearing. Designed for , it offers unparalleled smoothness and stability. The 10-ball design significantly reduces friction, allowing for longer and more controlled . -shaped profile ensures optimal string placement, enhancing trick execution and reducing string wear. Built to last, this bearing is an upgrade for any yo-yo, providing the precision and reliability needed for - . -Color:Silver-Material:Steel-Size:1.20X1.20X0.50cm/0.47X0.47X0.20in-Smooth and consistent: designed for smooth and consistent , these yoyo bearings enhance the overall play , making it easier to execute advanced tricks-Fine construction: constructed from steel materials, these bearings offer exceptional durability and stability, ensuring a long lifespan-Enhanced control: shaped design provides enhanced control, allowing for more precise and intricate yoyo maneuvers- to install: these yoyo bearings are to install, making them a convenient choice for yoyo enthusiasts looking to upgrade their equipment quickly- time: the 10 ball design ensures extended swivel times, allowing for longer play sessions and more complex tricks : 4 x Yoyo Ball Bearings