Precision Steel Ball, 6.9mm 6.95mm 6.98mm Bearing Transmission Ball, 7.01mm Screw 7.02mm-7.07mm Steel Ball, 1kg,7.07mm one Kilogram

Applicable to all kinds of precision machinery, hardware tools, machine tools, mining, automobile industry, instrumentation, medical equipment and other fields

• About quantity example: 7mm*1kg is about 650pcs
• Bearing Steel | Higher Precision | Better Hardness
• Precision, high temperature resistance, smooth and bright surface, long life
• The production process of steel balls, namely automatic cleaning of steel balls, automatic appearance inspection (automatic rejection of unqualified products), automatic rust prevention, and counting and packaging, are the keys to affecting the quality of steel balls.
• Steel ball production process: stamping, smooth grinding, quenching, hard grinding, appearance, fine grinding, cleaning, rust prevention, finished product packaging