3/8 Inch Drive x 11/32 Inch Shallow 6-Point Impact Socket BoltsandNuts.com and the ball/socket piece is

and the ball/socket piece is made from 8660 nickel-chromium-molybdenum steel

3 mm are too small to laser mark

Height: 41-7/8"

Part Number: 62F500HCSSS

Part Number: BIT-DWDRSD3/8X13/32

3/8 Inch Drive x 11/32 Inch Shallow 6-Point Impact Socket BoltsandNuts.com and the ball/socket piece isSize is marked both with a high visibility laser marking and a permanent stamped marking that won't wear off Shallow 6 point socket opening provides an exact fit for hex fasteners Radiused corners prevent fastener round off by applying force to a fastener's flat sides, rather than its corners Meets a minimum of 1. 3 times the ANSI ASME standard for proof torque Detent pin hole on one side allows works with both friction ring and detent pin anvils