• 3/8" Drive 6 Point Deep Impact Metric Socket 21mm
• Chrome molybdenum alloy steel (Cr-Mo) for exceptional strength and durability
• Off-corner loading design reduces fastener rounding
• Black oxide finish to resist corrosion
• High-visibility laser-etched markings provide quick size identification
• Secondary hard stamped size markings
• Meets or exceeds ASME specifications
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