Standard Pack = 1 piece(s). Containers are constructed from injection-molded industrial-grade polymers with 1" stacking rims and external ribbing for maximum strength and durability. Their 1" wall thickness also allows for secure stacking, and their Large handles, on four sides, make these the ideal product as a reusable shipping, storage, or work-in-process container. Straight walls provide efficient cubing on trucks and pallets too.