The Milwaukee 48-89-4644 4-Piece SHOCKWAVE Red Helix Drill Bits set is a compact impact-duty drill bit set for users who want a small group of common sizes ready for service calls, install work, and general drilling. This is a drill bit set designed for drilling in wood, plastics, and metal. Model Number: 48-89-4644.

What matters here is versatility. Milwaukee built these titanium-coated drill bits with a 1/4 inch hex shank, so they work in standard drills and impact drivers. If you move between a drill and an impact on the job, that saves time and keeps your setup simple. For electricians, maintenance techs, HVAC crews, and serious DIY users, that kind of flexibility is more useful than carrying a full index when you only need the common sizes.

The cutting geometry is where this set earns its keep. The QUAD EDGE tip is designed for a precise start, while the 135 degree split point helps reduce bit walking. In plain terms, the bit starts where you put it instead of skating around on the surface. That is especially helpful when you are drilling metal, working overhead, or trying to hit a mark cleanly on finished material.

Milwaukee also uses its RED HELIX design with a variable helix that starts aggressively and transitions through the flute. The practical benefit is faster chip removal and less heat buildup. Less heat means the cutting edge holds up longer, and the bit stays productive instead of dulling out early during repeated drilling. The enhanced tapered web also adds strength, which helps reduce breakage when the bit is pushed hard in tougher material.

This 4-piece SHOCKWAVE Red Helix drill bits set is a good fit when you want a compact set of metal drilling and general-purpose drilling sizes instead of a bulky case. It is especially useful for techs and contractors who need a few proven sizes in a pouch, bag, or service van. If you regularly drill pilot holes, mounting holes, or clearance holes in mixed materials, this set makes sense.

Milwaukee positions these bits for long life versus standard black oxide bits, with one source citing up to 5X life and another citing up to 3X life depending on comparison language. Either way, the takeaway is the same: this set is built for durability, fast starts, and compatibility with drills or impact drivers. If you want a small Milwaukee drill bit set that covers common sizes without taking up space, this one is aimed right at that job.

Small Set, Smart Sizes, No Wasted Space

The Milwaukee 48-89-4644 4-Piece SHOCKWAVE Red Helix Drill Bits set is the kind of compact bit set that makes a lot of sense for daily carry.

• Who it's for: Techs, installers, and contractors who want a few common drilling sizes ready in a drill or impact driver kit.
• Why it stands out: The hex shank, split point tip, and RED HELIX chip-clearing design make it more jobsite-friendly than a basic light-duty bit set.
• Worth knowing: This is a 4-piece compact set, not a full index. That is great for portability, but make sure these are the sizes you actually reach for most.

• Can these drill bits be used in an impact driver? Yes. They have a 1/4 inch hex shank and are designed for use in drills or impact drivers.
• What materials are these bits made for? They are intended for wood, plastics, and metal drilling applications.
• Do these bits have a split point tip? Yes. They use a 135 degree split point for more controlled starts and reduced walking.