1/2'' Dr. 26 Piece Metric Action Impact Std Socket Set - 60520260126 Standard length impact sockets 10mm to 36mm. Manufactured from drop forged Chrome Molybdenum alloy steel and specifically engineered for professional use with impact tools. This 26 Pce 1 2'' Dr. Metric Standard Length Socket Set contains sizes from 10mm thru to 36mm inclusive, but is minus the 31mm socket and is supplied in a blow mold case. Action Impact Sockets are available individually in all sizes from 1 4''Drive to 2 1 2'' Drives. Extension