IRWIN 1877493 Impact Performance Series 6-Point Deep Well Socket Bit, 21mm, 3/8-Inch Square Drive
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<b>[Product Information]</b><br>
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<li>Built for maximum durability and long life with impact drivers</li>
<li>Six-point deep wells with recessed corners drive torque across the flats for more secure fit and long life</li>
<li>Made from heavy-duty chrome molybdenum steel for maximum durability and long life with impact drivers</li>
<li>Thin wall construction increases access to tight spaces</li>
<li>Manufactured with heavy-duty, cold-forged, high-grade steel to withstand high torque output</li>
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