These high-precision ABEC-7 miniature ball bearings deliver exceptional performance for demanding applications. The set includes 2 pieces featuring blue-sealed rings and RS sealing technology that effectively shields against dust, dirt, and debris infiltration. The Z3V3 specification indicates superior vibration control and stability even at high rotational speeds. These compact bearings are precisely engineered for smooth, quiet operation while maintaining tight tolerances. The corrosion-resistant design ensures lasting durability in various operating conditions. Perfect for hobby projects, RC vehicles, skateboards, inline skates, and other applications requiring reliable, high-speed bearing performance. The premium construction combines optimal friction reduction with outstanding load capacity, making these bearings an excellent choice for both maintenance and new builds where precision matters.