1.Prompt delivery 2.Competitive price 3.OEM is accepted 4.Samples can be ... days14 Tolerance level ABEC-1 (P0), ABEC-3 (P6),ABEC-5(P5)15 Seals type None16 Precision rating P0, P6, P517 ... will give you the fastest and most satisfactory answer! 637/2.5-2Z