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The MILWAUKEE ELEC TOOL 48-89-4621 is a 3/8-inch Impact Duty Titanium Drill Bit sold in a 3-pack. Built on the Shockwave platform, this bit is engineered to handle both impact drivers and standard drills without failure. The variable helix design starts at an aggressive 35-degree angle and transitions to 15 degrees, accelerating chip evacuation and reducing heat buildup so the cutting edge stays sharp longer. A titanium coating adds surface hardness, extending service life up to three times longer than standard black oxide bits. The 135-degree split point tip starts on contact without walking, delivering fast and accurate holes.
This drill bit is suited for trade professionals who need reliable performance across a wide range of drilling tasks. The Shockwave-compatible shank absorbs torque peaks from impact drivers, making it practical for electricians, plumbers, HVAC techs, and general contractors drilling through wood, metal, and composite materials on the job site. The 3-pack format reduces downtime by keeping spares on hand during extended use. The titanium coating and Red Helix construction make it a direct step up from standard HSS bits for high-volume applications.
Designed as an impact-duty replacement or upgrade drill bit for use with standard 3/8-inch chuck impact drivers and drill/drivers across residential and commercial trade applications.
Insert the bit fully into the chuck or impact driver collet and confirm it is securely seated before operation. Ensure the workpiece is properly clamped or secured before drilling. Allow the split point to engage the material at low speed before increasing drive force. Inspect the cutting edge and titanium coating regularly and replace the bit when wear reduces cutting efficiency.
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