【Wide Application】Our precision steel bearing balls can be widely used in bearings, aircraft, motors, bicycles, motorcycles, automobiles, light rails, furniture, drawer slides, door locks.door and many other uses. 【Easy to carry】The storage box has a built-in partition space, which is not easy to roll over.It perfectly solves the problem of mixing different sizes.It is convenient to use. The practical storage box is easy to carry.Bikes can always carry spare bearings to deal with any accidents. 【Meet your different needs】510PCS high precision bearings, 11 component sizes can meet the needs of most bearings in your life, there is no need to go to the repair shop, you can repair itat home.It will save you a lot of time and money 【High Quality Material】All bearing balls are made of high quality stainless steel, firm and will not rust.The surface of the round ball is polished and smooth, without cracks, burrs and debris.If you lubricate on it, you can improve lubrication and prevent corrosion and rust.