Shielded size C concave bearing, 10 ball - wide bearing for unresponsive yoyos.
Fits most modern day unresponsive yoyos such as YoYoFactory Shutter, Replay Pro, MagicYoYo N12, Y01 Node, Y03 Hertz, OFFSET Ascent/Deviant/Outlier/Xenon/Logic series. If bearings start to become noisy, yoyo lubricant is recommended to keep it spinning quietly!