This Mitutoyo Gage Block Set, model 516-902 BE1-81-A+, is a high-quality precision measuring instrument made of steel and manufactured in Japan. It comes with a rectangular shape and a size of 4 inches, making it ideal for use in CNC, metalworking, and other industrial applications.

Despite missing three blocks, this gage block set is still in good working condition and can provide accurate, reliable measurements. Whether you're a professional machinist or a hobbyist, this Mitutoyo gage block set is an essential tool that can help you get the job done.