Constructed of blow-molded high-density polyethylene in safety yellow color for superior strength, chemical resistance and durability. Drums rest on the floor of the basin, transferring the load to the pallet, allowing for multi-level storage. External centering guides keep basin from slipping off the pallet. Basin has a spill capacity of 66-gallons and includes a 3/4" poly drain with plug. Basins fully nest when empty for economical shipping and storage. (Wooden pallet not included)