A SELF-ADJUSTING PIPE WRENCH by Hollands Manufacturing Company, Erie, Pennsylvania. This early 16″ size wrench is marked with the U.S. Patent date of November 15, 1892, which was issued to Alfred N. Parnell of Erie, Pennsylvania and assigned to Hollands Manufacturing Company. It is shown in the Schulz book on “Antique & Unusual Wrenches” as No. 352. Length = 16.00 Inches (Ref. Id No.: 467052) [Free Shipping]