These are new old stock. Unused. These are USA made from the early 1980s. I have a few cases of each left. Sizes are below. Here you are getting one 10pc 1/2 Drive socket set.
Exactly as pictured. These sockets fit standard and metric without issue.
Made In USA Designed by the Metrinch Tool Company in St. Paul, Minnesota in the 1980s Items are New & Sealed, New Old Stock (The packaging may have shelf wear from weight of sockets and age) Sockets are 12 Points: 6 Points SAE Standard & 6 Points Metric These are NOT the modern style Metrinch sockets which are high-priced, made in Taiwan, and based on a 6 point (or lobe) design.
Manufactured by National Hand Tool in Texas.
1/2" Drive : 7/16-11mm, 1/2-13mm, 9/16-14mm, 5/8-16mm, 11/16-17mm, 3/4-19mm, 13/16-21mm, 7/8-22mm, 15/16-24mm, 1-25mm