Wokape 72Pcs 6 Sizes Carbon Steel Bearings Assortment Set, 693ZZ, 623ZZ, 624ZZ, 685ZZ, 687ZZ,627ZZ Deep Groove Ball Bearings Double Shielded Miniature Deep Ball Bearings

["【Wide Applications】: Made of carbon steel, this bearing has a surface that isn't finely finished, exhibiting a black dark hue. It has an inner bore with a tolerance of ±0.08mm, so it's fit for situations with not-so-high performance requirements. Particularly, it is well-suited for low-speed transmission devices operating at speeds below 200rpm, such as simple casters and toy cars.","【Carbon Steel Material】: This deep-groove bearings kit, crafted from carbon steel, delivers exceptional durability and strong resistance to deformation even when subjected to heavy loads. Ball bearing adeptly absorb vibrations and shocks, diminish noise levels, curtail energy dissipation, and boost transmission effectiveness. With pre-lubrication for easy operation, double bearings are perfectly tailored for prolonged, low-demand uses.","【6 Size Options】: Our deep-groove ball bearings set includes 6 sizes, the inner diameter, outer diameter, and thickness of each size of bearing are different. The rich size options can be adapted to various equipment with different specifications to meet diverse repair and assembly needs, saving you the trouble of making multiple purchases.","【Pre-Lubricated】: The lubricant sealed within ball bearings reduces friction, enabling rotation with minimal resistance. This not only ensures smooth operation but also significantly lowers maintenance frequency and makes upkeep effortless. Additionally, you can replenish lubricant as needed to extend service life.","【Carbon Steel Bearing Set】: In this kit, you will receive 6 different sizes bearings( 3*8*4MM-693ZZ, 3*10*4MM-623ZZ, 4*13*5MM-624ZZ, 5*11*5MM-685ZZ, 7*14*5MM-687ZZ, 7*22*7MM-627ZZ), with 12pcs carbon steel bearings of each size, totaling 72pcs bearings. All are neatly stored in a plastic box, meeting your diverse usage needs and facilitating easy carrying and storage."]