1.[pieces bearing balls] --The precision steel bearing ball classification kit is 0.22inch/5.5mm,total, they are easy to distinguish.
2.[ bearing performance] --The surface is coated with a small amount of grease to improve lubrication and prevent corrosion and rust.The heat treatment process makes the bearing ball very strong, not easily deformed for a long time.
3.[precision bearing balls]--It is used for friction reduction. These bearing precision balls are installed between the inner and outer rings. When the machine bearing rotates, they will help reduce friction and damage.
4. It is made of bearing steel, smooth and burr-free.