Drawn steel bodies. Rugged epoxy finish resists rust. 6 oz size available with or without base holder. Rigid spouts have .15 in diameter ledge-cone machined tips to lift oil filler dust caps. Note: rigid spouts are non-detachable. All flex spouts are zinc plated and detachable with a base thread of 1/4 in - 28. 6 oz capcity with base holder and 6 in flex spout.