... Using widely Deep groove ball bearings :1, Miniature bearings Inner diameter: 1mm-12mm, 3/32"-21" and flanged types. 2, Small Deep Groove Ball bearings 6000 ... ISO9001 certificate9, OEM and ODM are accepted10, Ball bearings snap ring: N, NR11, Tolerance: ABEC-1, ABEC-3, ABEC-5, ABEC-712 ... more information or send us inquiry with details directly. Deep groove ball bearing, EMQ ball bearing,motor bearing