Japanese Metric Hex Bit Socket Set - 3/8" Drive ~ 7 PC Set. Includes metric hex bit sizes:   3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm. Red metal box for storage. Chrome Vanadium Steel.   Made in Japan.,,Hardwick & Sons is pleased to offer quality tools from Japan for the many people who desire special & well-crafted tools. The wide variety of Japanese products that we offer come from the many craftsmen & toolmakers in Japan who have a special dedication to their skillful craft & art of toolmaking. Japanese Metric Hex Bit Socket Set - 3/8" Drive ~ 7 PC Set