Japanese 3/4" Female to 1" Male Socket Adapter. Center Sockets.  M30A. 3/4" F x 1" M. 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. 3/4" Female to 1" Male Socket Adapter - Made in Japan