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The Proto J4990-6M 3/8 Hex Bit Socket with a 6mm size is a durable tool designed for professionals. Made by Stanley Proto, this hex bit socket is crafted from heat-treated alloy steel for long-lasting wear resistance, reducing distortion over time.
This socket is excellent for hand-powered applications and fits a 3/8-inch drive system. It can take on the torque load effectively, making it ideal for various tasks in mechanical and industrial settings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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