1.Tolerance:ABEC-1 ABEC-3 ABEC-5 2.ISO 9001:2008 3.Mold:OPEN,Z,ZZ,RZ,2RZ, ... , individual paper box , then in cartons, then in wooden pallet.2.The users who have any requirements in packing may write ... me for new price and delivery !!! Deep Groove Ball Bearing MR Series