These are very high quality, made in the U.S.A., heavy duty cans and well worth the added cost over a plastic can.  I have several type 1 and type 2 red (for gas) and yellow (for diesel) cans and will never buy another plastic fuel can.  Since 2009, the federal government has mandated that all plastic fuel cans incorporate a pouring mechanism that spills fuel down the side of your car and onto your shoes.  These metal cans are somehow exempt from the mandatory fuel spilling requirements. The type 1 cans are good for filling from the top (like a tractor or generator).  For filling from the side (like an automobile) I would recommend the type 2 cans with a nozzle.  You will love these cans!