Wear resistant imported polyethylene roller bearingsQuick DetailsStructure:Deep GrooveType:POM roller bearings ... , Z3, Z4 Packaging & DeliveryPackaging Details:1. Industrial packaging: a). plastic tube + carton + pallet; b). plastic bag + kraft paper + carton + pallet; 2 ... and safe industrial packages, either in plastic bag, or plastic tube, or white box, or colored box. Customized package, pls ...