Milwaukee Elec Tool 48-32-4440 Ecx Power Bit Set 2 Pack

Product Description

The MILWAUKEE ELEC TOOL 48-32-4440 is a two-piece ECX power bit set built for heavy-duty impact driving applications. The set includes one 1 inch ECX 1 and one 1 inch ECX 2 bit, both manufactured from Custom Alloy76 steel and heat-treated to control hardness from tip to shank. An optimized shock zone geometry absorbs peak torque loads generated by impact drivers, reducing the risk of bit fracture under repeated stress. A precision-machined tip delivers a tight fit in ECX fastener heads, minimizing cam-out, stripping, and wobble. These bits are rated for up to 10 times the service life of standard driver bits, making them a practical choice for high-cycle fastening work on the job site.

These bits are intended for use with cordless and corded drills and impact drivers equipped with a standard 1/4 inch hex chuck. The ECX drive format combines a Phillips and square recess profile, commonly found in decking screws and composite fastening systems. Both bits in this set measure 1 inch in length, suited for close-quarters fastening and use with screw-holding bit holders. Licensed electricians, carpenters, deck installers, and general contractors will find this set useful wherever ECX-drive fasteners are specified.

Key Features

• Custom Alloy76 steel construction with heat treatment for controlled hardness throughout
• Shock zone geometry absorbs peak torque and reduces bit breakage during impact driving
• Precision-machined tip minimizes cam-out, stripping, and wobble in ECX fastener heads
• Rated up to 10 times longer service life compared to standard driver bits
• 1/4 inch hex shank fits standard drills and impact drivers without an adapter
• Includes both ECX 1 and ECX 2 sizes in a single pack

Compatibility

Designed for use with any drill or impact driver accepting a standard 1/4 inch hex shank. Both bits are compatible with ECX-drive fasteners requiring a size 1 or size 2 tip.

Installation Notes

Insert the 1/4 inch hex shank fully into the chuck or bit holder before applying torque. When using with an impact driver, select the appropriate torque setting for the fastener size and substrate to avoid overdriving. Inspect bit tips regularly for wear; a worn tip increases cam-out risk and can damage fastener heads. No special tools or codes apply to bit installation or replacement.