3/8 Inch Drive x 15 mm Deep 12-Point Impact Socket BoltsandNuts.com They are gold oxide surface

They are gold oxide surface treated

Part Number: VibraTite121250ml

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Part Number: DUR102PC227-95

3/8 Inch Drive x 15 mm Deep 12-Point Impact Socket BoltsandNuts.com They are gold oxide surfaceSize is marked both with a high visibility laser marking and a permanent stamped marking that won't wear off Deep 12 point socket opening provides an exact fit for 12 point fasteners Radiused corners prevent fastener round off by applying force to a fastener's flat sides, rather than its corners Interior socket well extends far into the socket, which allows for better fastener engagement in more situations Meets a minimum of 1. 3 times the ANSI ASME