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The Proto J4990-7M is a 3/8 inch hex bit socket designed for various applications in both professional and home settings. It is made of heat-treated alloy steel for enhanced durability and long use. The hex opening securely holds the bit, allowing the bit holder to take the torque load effectively.
This hex bit socket is suitable for various fastening applications. Its polished chrome finish provides resistance against corrosion, ensuring a longer working life.
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