The versatile, high-impact 300-gallon polyethylene holding tank from Satellite Industries can be used singly or connected end-to-end to create a high-volume storage container. Tanks come in natural or gray colors, weighing 130 pounds. The heavy-duty tank has two internal pillars and thickened corners to accommodate stacking and reduce failure caused by continual handling on abrasive materials such as asphalt and cement. The fittings are molded for added strength and product longevity, and are recessed to guard against breakage. 800/328-3332; www.satelliteindustries.com.