15PC SHOCKWAVE™ Impact Duty RED HELIX™ Titanium Drill Bit Set

Milwaukee 48-89-4670 — Product Description

The Milwaukee 48-89-4670 is a 15-piece SHOCKWAVE™ Impact Duty RED HELIX™ titanium drill bit set, designed for high-speed, high-durability drilling in metal, wood, and plastic, especially when used with impact drivers or drill drivers.

This is a mid-sized SHOCKWAVE kit, sitting between the smaller “essential” sets and the larger 23–30 piece kits.

What’s included (typical range)

Usually covers common fractional sizes from small pilot bits up to 3/8", such as:

• 1/16", 5/64", 3/32"
• 7/64", 1/8", 9/64"
• 5/32", 11/64", 3/16"
• 7/32", 1/4"
• 5/16", 3/8"

(Some variants may include duplicates of high-use sizes like 1/8" or 3/16".)

Key Features

• SHOCKWAVE™ Impact Duty design – rated for impact drivers and high-torque drilling
• RED HELIX™ flute geometry – variable helix clears chips fast and reduces heat buildup
• QUAD EDGE™ tip – four cutting edges for faster starts and cleaner holes
• 135° split point tip – prevents walking on metal surfaces
• Titanium coating (TiN) – extends bit life significantly vs black oxide bits (up to ~5× in ideal use)
• 1/4" hex shank – quick-change compatible for jobsite efficiency

How it fits your other kits

From what you’ve been listing:

• 7-piece (4637): bare essentials
• 10-piece (4633): core jobsite sizes
• 15-piece (4670): balanced “standard contractor set” ← this one
• 16-piece (4636): expanded coverage
• 23-piece (4631): full range system set

So the 4670 is the “sweet spot” set—not too small, not fully expanded.

Best Uses

• General construction drilling
• Electrical and HVAC installs
• Wood framing, metal studs, and sheet metal
• Jobsite impact driver use
• Keeping a primary all-purpose drill bit kit