This Doane Z-Knee Retractor is a premium instrument made in Germany by Norralco for use in orthopedics. The double-ended retractor is 6.5 inches long and has two blade sizes of 65 mm and 85 mm long, both 12 mm wide. It is suitable for surgical and orthopedic procedures and is a valuable addition to any orthopedic setting. The brand, model, and country/region of manufacture are clearly marked for authenticity.