National Tool and Manufacturing is a provider of mold bases and mold component parts for the molding and mold-making industries. It is a one-stop shopping source for moldmakers that offers everything from standard ejector pins to complex mold bases and hot runner systems. Based in Kenilworth, N.J., the company has more than 100,000 square feet of manufacturing space. It also maintains a mold set plant in Elgin, Ill. Founded in 1933, the company was one of the first to standardize mold set production.