Stainless steel ball aisi 302 Material: aisi 302 stainless steel Size: 0.5mm ~ 50.8mm Grade: g100/g200 Hardness: hrc25-39 Certificates: iso9001, iso14001, iso/ts16949 Feature: good corrosion resistance Applications: dispenser valves, aerosol valves, lotion pumps, locks, agitators, animal feeders, trigger sprayers, finger pumps, food processing, medical applications