The product is "The New Book of Knowledge Encyclopedia Complete 20 Set 1985," a comprehensive encyclopedia series published by Groiler Publishing Company, Inc. in 1985. It is a hardcover set consisting of 20 volumes, covering various subjects in general knowledge. Written by various authors, this encyclopedia is a valuable resource for education and reference purposes, providing information in English language. It falls under the categories of Dictionaries & Reference, Textbooks, Education & Reference, and Books & Magazines.