Luminous Luminous Reflective Yoyo Balls, Luminous K1-Plus Are Equipped With Ordinary Bearing Made By ABS, String Trick Style (1A, 3A, 5A), Durable And Has High Performance Keep Noctilucent Yoyo Under The Light Or In The Sun For A Few Minutes To Charge The Glow Effect Heavier Than And Have More Without Weight Rings. Perfect toy, friends, families, etc.; Daily exercise or competition recommended. If the string is blocked: 1. Remove 2. Look if the ball is loose, and the two hemispheres must be well clamped 3. Attach properly. (Highlights)Suitable Movements: (1A, 3A, 5A)Weight: 65g Diameter: 51.03mm Ball Width: 41.01mm Shaft Width: 4.38mm Bearing: 8 Ball Shaped Shaft Screw: * 16mm Color: Green Material: ABS Package Content: 1 * Ball1 * Gloves1 * Velvet Bag5 * Rope (Random Color, Specific Color Is Not Accepted)Only the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.