JStandard Bulk Pack. Bearings Are Stacked In Columns In A Polystyrene Lined Cardboard Outer Carton. Polystyene Fill Is Placed Between The Polythene And Cardboard Outer Carton. For Bearings Of 6000-Series Or Smaller, Columns Are Placed Into Four Medium Sized Polythene Lined Cardboard Boxes Before Being Placed Into The Cardboard Outer Carton