• Crank it your way with the Hyper Cluster Yo-Yo Core Pack! • Features a customisable core with high performance ball bearings! • Increase your spin, stamina and looping abilities! • Compatible with all Hyper Cluster Yo-Yo\'s and parts! The Hyper Cluster high performance yo-yo system that’s as unique as you lets you crank it your way! Customise with different skins and cores to express your style and tailor performance to your personal trick style. Customisable core with high performance ball bearings. Customise to increase your spin, stamina and looping abilities. Additional details: Packaging size: 150mm x 90mm x 50mm Recommended age: 8+