Product: There are two own brands F&D and CBB in Fuda for different quality requirements. Besides, we also accept OEM brand and custom packagings. Item Range: 6000-6014; 6200-6218; 6300-6316; 607-609; 625-629 Type: Open, ZZ,Z,2RS,RS,2RZ,RZ, N,NR. Material: Bearing Steel( Chrome steel Gcr-15)