... ball bearing:1.Structure: Deep groove ball bearing2.Place of Origin: China (Mainland)3.Model Number: 60xx, 62xx, 63xx, 64xx, 16xxx ... : ABEC-1, 3, 5, Z1V1 Z2V2 Z3V3, EMQ5.Material: Chrome steel, stainless steel,Carbon steel6.Quality standard: ISO9001: ... 2000 standard7.Cage material: Nylon steel brass8.Application: Auto, tractor, machine tool, ...