Yoyo King Spin Control Metal Pro Yoyo with Extra Yoyo String (black) Weight: 68.4 grams - Width: 52.8 mm - Diameter: 40.7 mm (includes string). Comes with both a narrow responsive and wide nonresponsive C bearing and extra yo-yo string Constructed of aircraft quality 6061 aluminum. Anodized for color, added strength, and corrosion resistance. Responsive means it wakes like a standard yoyo and binding is NOT required to wake the yoyo up Want unresponsive / nonresponsive play? Just install the wide C bearing. Narrow flat C bearing for longer spin times installed. Also includes wide, angled C bearing for nonresponsive / unresponsive binding tricks. Silicone response system for superior play.