Giwnhvx 40 Pcs Steel R188 KK Bearing Speed Responsive High Carbon Chromium Steel Bearings R188 U Groove for Yoyos Models

The precision is much ordinary KK bearings, and no lubricant and other auxiliary products are needed to achieve the perfect condition. Please check the size to see if it is suitable for your yo-yo's bearing specification before purchasing. The biggest advantage of this special bearing is that the rope be in the center of the bearing as much as possible when playing with the ball, which reduces the friction between the rope and the wall of the ball. Improve the idle time, reduce the ball power consumption, and play the feeling of more smooth and comfortable ~!, Manufacturer: Giwnhvx