Pack of 50 6mm Glass ball paint agitatorsPerfect for adding into paint pots to help mix up stubborn pigments. Unlike steel agitators glass agitators do not react with the paint so can be left inside the bottle all the time.It’s recommended to use 1-2 agitators per bottle depending on the consistency of the paint (heavier pigments may need 2)This pack contains 50 6mm glass agitator balls