Designed for durability and high performance, this U-shaped 10-ball KK bearing is suitable for yo-yo enthusiasts looking to enhance their play. The high-precision construction ensures consistent and , while the 10-ball configuration minimizes friction for extended spin times. -shaped design helps maintain string alignment, reducing wear and tear on both the string and the bearing. Ideal for both beginners and advanced players, this bearing is a must-have for serious about yo-yoing. Features -Color:Silver -Material:Steel -Size:1.20X1.20X0.50cm/0.47X0.47X0.20in -Optimal performance: these yoyo bearings are designed to deliver optimal performance, ensuring smooth and consistent use for advanced yoyo tricks -High precision engineering: engineered with high precision, these bearings provide reliable and consistent performance, helping you achieve your best yoyo tricks -Extended : the 10ball configuration ensures extended , allowing for more complex tricks and longer play sessions -Unbreakable and reliable: made from steel materials, these bearings offer exceptional durability and stability, ensuring a long lifespan -Versatile compatibility: these yoyo bearings are compatible with a wide range of yoyo models, making them a versatile choice for yoyo enthusiasts of all levels Package list: 4 x Yoyo Ball Bearings