Original Metrinch USA 24 pc 1/2 & 3/8 Drive 12 Point Socket Set Made in USA in Early 1980's NOS 12 Point Sockets 1/2 Sizes: 7/16-11mm, 1/2-13mm, 9/16-14mm, 19/32-15mm, 5/8-16mm, 11/16-17mm, 3/4-19mm, 13/16-21mm, 7/8-22mm, 15/16-24mm, 1-25mm, 1-1/16-27mm, 1-1/18-28mm, 1-1/4-32mm 3/8 Sizes: 3/8-10mm, 7/16-11mm, 15/32-12mm, 1/2-13mmm, 9/16-14mm, 19/32-15mm, 5/8-16mm, 5/8-16mm Spark Plug Deep, 11/16-17mm, 3/4-19mm Seller Warranty if Purchased by Vivitor Enterprises Inc. Not Modern 6 Lobed Taiwanese design