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SUS420J2 stainless steel ball :
Diameter : 0.5mm--50.8 mm
material : 420 stainless steel
characteristics : antirust ,high hardness ,magnetic

SUS420J2 stainless steel ball :
Diameter : 0.5mm--50.8 mm
material : 420 stainless steel
characteristics : antirust ,high hardness ,magnetic



