Standard pack = 1 piece(s). Safety can has a self-venting, self-closing, leak-proof lid that prevents ruptures from pressure buildup while controlling vapors and spills. Its warning label with an extra-Large ID zone (for user labeling) also helps avoid misuse, reducing the potential for incompatible mixtures. And it includes a precision arrester screen that stops flashback ignition as well as the easy-to-pour, easy-to-fill "I'm Easy" Funnel. Can is chemical and corrosion resistant too. Meets OSHA and NFPA C.