TransferConveyorUBearingSliver￥118.40去看看鸣启优选店发布了极速10Pcs 8mm Steel Conveyor Ball Sliver Transfer UBearing U30mmUBearingSleeve10mm￥25.20去看看嘉富百汇发布了极速CAA Hot 30mm x 30mm x 10mm 2Pin DC 12V Sleeve UBearing 6
