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The APEX EX-370-B-4 is a hex-to-square extension power screwdriver bit designed for use with power tools and impact drivers in trade and industrial applications. It features a 1/4 inch hex drive size and an overall length of 4 inches, making it suitable for reaching fasteners in tight or recessed spaces. This bit is sold as a single piece and is built for repeated use in demanding work environments. Electricians, HVAC technicians, plumbers, and general contractors commonly use drive bits like this during panel assembly, fixture mounting, and equipment installation tasks.
This bit type is used across a wide range of trade applications where powered fastening is required. The hex-to-square extension configuration allows it to bridge hex-drive power tools with square-drive sockets or accessories. It fits standard 1/4 inch hex chucks found on most cordless and corded power screwdrivers and impact drivers. The 4 inch overall length provides added reach without sacrificing control in close-clearance installations common in mechanical rooms, electrical enclosures, and equipment panels.
Designed for use with power screwdrivers and impact drivers equipped with a standard 1/4 inch hex chuck.
Installation of this bit requires no special tools beyond the power driver it is seated into. Ensure the tool is powered off or the battery is removed before inserting or removing the bit from the chuck. Verify the hex shank is fully seated and locked before applying torque. Follow applicable workplace safety guidelines when operating power fastening tools.
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