Bearing AccessoriesChina 12mm, 31/64" 12.3031mm AISI 1010/1015 Q195/Q235 Low Carbon Steel Balls G20-G1000", Find details about China Carbon Steel Ball, Steel Ball from 12mm, 31/64" 12.3031mm AISI 1010/1015 Q195/Q235 Low Carbon Steel Balls G20-G1000"