The Williams 3/4 Inch Drive One Piece Impact Hex Bit Driver is designed to maximize strength and reduces breakage. The chamfered ends provide easy engagement of the drive tool and fastener. This item is suitable for use with pneumatic and electric impact wrenches. It is specially heat treated for impact use to provide long life, safety and durability. The drive end features pin retention hole and groove. For over 140 years, Williams has manufactured high quality industrial tools for professionals like you.  Every day we purposefully choose our next product innovation by examining and understanding your needs, because we know you value your work and pride yourself in being the best. We develop tools strong enough to endure extreme industrial conditions.  Leveraging our heritage of making great tools, with the right materials, and precise engineering specifications. Since 1882, Williams had made products designed to be put to work with confidence.