P/n:6, 000 to 6, 030, 6, 200 to 6, 236, 6, 300 to 6, 336, 6, 401 to 6, 426 Precision:p0 p6 p5(abec-1, abec-3, abec-5) Seals type: open, nr, z, zz, rs, 2rs, rz Cage: brass, steel Material: chrome steel gcr15 Hardness:hrc 60-65 Service: oem service accepted, Welcome to contact us at anytime, thank you! Packing: according to customer requests