Miniature Deep Groove Ball Bearing 638-2z/2RS/Open 8X28X9mm / China Manufacturer / China Factory NINGBO JINGWEI IMP.&EXP. CO., LTD. Base Info Description Pre：Miniature Deep Groove Ball Bearing 637-2z/2RS/Open 7X26X9mm / China Manufacturer / China Factory Next：Miniature Deep Groove Ball Bearing 639-2z/2RS/Open 9X30X10mm / China Manufacturer / China Factory
