... :20-30days 2.ISO9001:2000quality 3.OEM; Brand: SBRN 4.High precision Features:1)Series:30202-30226,30302-30320,32004-32024,32201 ... -31320,32303-32320,33010-33022,33109-33118,33205-33220.2)High-speed rotation,low-friction torque,low vibration and low noise ... .3)Material:chrome steel GCR15 and high carbon steel GCR114)Packing:industrial box and single packing.Taper ...