Yoyo King Green Merlin Professional Responsive Yoyo with Narrow C Bearing and Extra String Weight: 63.8 grams - Width: 38.11 mm - Diameter: 54.3 mm Optimized to find the best balance, long spin times, stability, and ease of catching on the string Merlins flared gap shape adds weight to the outside edges of the yoyo for long fast spins Silicone response system. Ball bearing axle for super long spin times! Includes a yoyo string. Narrow C sized bearing. If you like nonresponsive yoyoing, put in your own wide C bearing and you're all set. Durable plastic construction.