Features: This Yo-Yo can enhance imagination, creativity, quick reflexes, motor skills, and hand-eye coordination. Made of 6061 alloy + eco-friendly, flexible, impact-resistant, and water-resistant material for more stability. The two spheres are aligned to reduce data tolerance, ensuring sphere stability during rotation and extending the duration for 1A/3A/5A tricks. The ball arm forms a gradual V-shape near the center to reduce friction and make the ball spin longer. Uses high-quality bearings to reduce functional wear and achieve more imaginative styles and movements. Equipped with secondary oxidation technology and exquisite craftsmanship design, it's a sphere specially designed to challenge fingers. Supplied with professional Yo-Yo bearing, durable and long-lasting. Specifications: Color: As shown Material: Alloy + ABS Diameter: 55.9 mm Width: 42.3 mm Axle Width: 4.59 mm Bearings: High-quality 10-bearing system Surface: Polished surface Screw Specifications: * 16 mm Applicable Tricks: 1A, 3A, 5A Package Size: 8.5 * 6 * 4.7 cm Package Weight: 100 g Package Includes: 1 x Yo-Yo (with string)