TEKTON 47812 1/2-Inch Drive by 21 mm Deep Impact Socket， Cr-V， 6-Point<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Engineered for use with impact drivers</li><li>High-torque， 6-point opening grips flat sides of fasteners， not corners， preventing round-off</li><li>Extra-deep broach accommodates longer fasteners</li><li>Large， high-contrast size marking is permanently laser etched and easy to read， even in low light</li><li>Made of premium chrome vanadium steel with a protective black phosphate finish</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31IukI42PEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41awziKcB0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31lTBajkjML.jpg" noproxy>