Size 15Mm Diameter Grade G1000 Precision Balls Material Made of 201 Stainless Steel. They Hold up Less Corrosion Resistance. for Use in Applications That Need Low Cost, High Durability, and with No Worry About Exposing to Corrosive Elements. Features Wide Range of Applications(Maintain Industrial Equipment or Use for Family Diy Projects); Cost-Effective(Can Repair Existing Products) Applications Maintain Product That Uses Steel Balls, Such As Turntable, Drawer Slides,Ers, Door Locks; Diy Projects Like a Keychain, or Adding Weight for Your Projects, Etc. a, Manufacturer: CHAOUYYZ