Yoyo King Proto9 Red Professional Metal Yo-yo with Narrow Responsive and Wide Nonresponsive C Bearing and Extra Yoyo String Edition Red Version Comes With Narrow, Responsive Bearing Installed and Wide Nonresponsive Bearing in the Box. Launched on Kickstarter, the popular Proto9 yoyo is now available on Amazon! Constructed of aircraft quality 6061 aluminum. Anodized for color, added strength and corrosion resistance. Take apart design for ease of changing and untangling string. Solid red on one side, with Proto9 written on the other. Silicone pads for binding-required, unresponsive play when wide bearing is installed. With the narrow bearing, it will wake up. Width 42.2 mm, Diameter 52.8 mm, Weight 68 grams. Incredible catch zone. Wide, flared gap. Comes with a wide C bearing, with a channelized, angled shape to keep the string centered during advanced play. Long sleep times. Ball bearing axle. Terrific for advanced string tricks. Install the included wide C bearing for nonresponsive play that DOES NOT WAKE UP and requires a bind to get back to your hand. For advanced players who know how to bind only, or are willing to learn.