AquaWorld Bait Tanks are molded from UV Stabilized heavy-duty polyethylene with thick walls for added strength. Corners are rounded so bait cannot be trapped. As an added value, recessed cutting boards are made to fit flush in the top of each baitwell. Traditional Bait Tanks are not plumbed and AquaWorld recommends using the AC-7 Complete Water Pickup and Pump System Kit with these tanks.