What hole sizes can you drill with this step bit?

This step drill bit covers 5 diameter steps: 4 mm, 6 mm, 8 mm, 10 mm, and 12 mm in 2 mm increments.

Is this step drill bit suitable for impact drivers?

Yes, with its 1/4" hex shank and SHOCKWAVE IMPACT DUTY design, it is engineered for impact drivers and drill drivers.

Do you need to pilot drill before using this bit?

No, the RAPID STRIKE tip provides accurate starts without walking and eliminates the need for pre-drilling.

What is the benefit of the TiAlN coating?

The titanium aluminum nitride coating reduces heat build-up and delivers up to 5 times longer service life.

Will the step size markings wear off over time?

No, the size markings are laser engraved to remain clearly readable throughout use.

MILWAUKEE 48899262 SHOCKWAVE IMPACT DUTY step drill ShW 4-12 mm (5 steps of 2mm)

Name: MILWAUKEE 48899262 SHOCKWAVE IMPACT DUTY step drill ShW 4-12 mm (5 steps of 2mm)
Brand: MILWAUKEE
SKU: 03188759
Price: 45.2 EUR
Availability: PreOrder

Supplier number: MILWAUKEE 48899262 | EAN 0045242505173

Recommended Retail Price €90.63

45.20 tax incl.

€37.36 excl. VAT (incl. all environmental contributions)

On order: delivered from 10/10/2026

Delivery by DHL

✆ Talk to a specialist

How does it work?

Buy Milwaukee products with a total order value of at least €250 excl. VAT.
For a total order value of €250 excl. VAT up to but excluding €500 excl. VAT, you receive a FREE Milwaukee 12-piece Tri-Lobe screwdriver set (4932472003) worth €55.90.
For a total order value of €500 excl. VAT up to but excluding €750 excl. VAT, you receive a FREE Milwaukee M18 125 mm Random Orbital Sander cordless random orbital sander (4933464228) worth €168.90.
For a total order value of €750 excl. VAT or more, you receive a FREE Milwaukee M18 FUEL 125 mm cordless angle grinder with slide switch and brake worth €357.90.
The free item is automatically added to your order. No registration is required.
This promotion cannot be combined with the ongoing Milwaukee Cashback Promotion on Milwaukee hand tools. An invoice for which you receive a free Buy More, Get More gift therefore cannot also be submitted for the Milwaukee hand tools cashback promotion.
The promotion is valid from 01.10.2026 to 31.10.2026.
Milwaukee Buy More, Get More deals are recognisable by the promotion label on the product page. Click the label to view all available deals.

Accurate drilling with Milwaukee step bits

Practical benefits

Fast and accurate starts: The specialized tip design allows you to drill immediately without pre-drilling or slipping across the workpiece.
Resists heat and wear: A titanium aluminum nitride coating reduces heat build-up so your drill bit retains its sharpness longer.
Ready for impact drivers: With an optimized 1/4 inch hex shank, you prevent premature breaks during high-torque impact drilling tasks.

In a nutshell

The right choise for

With the Milwaukee Shockwave Impact Duty step drill bit 48899262, you drill clean and precise holes in sheet metal and thin materials without pre-drilling. The specialized Rapid Strike tip prevents walking across the workpiece for fast and accurate starts. Covering 5 steps from 4 mm to 12 mm in 2 mm increments, it eliminates the need to change bits when enlarging holes in junction boxes or enclosures. The titanium aluminum nitride coating significantly reduces heat build-up and provides up to 5 times longer service life. Built with a 1/4 inch hex shank and shock-absorbing zone, it withstands high torque on impact drivers and drill drivers without shank breakage. Laser-engraved markings ensure hole sizes remain clearly readable throughout demanding jobs.

Product information FAQ

€45.20

tax incl.

Key features according to our expert

Smallest diameter: 4 mm
Largest diameter: 12 mm
Shank size: 1/4 inch
Number of steps: 5
Product Range: Milwaukee SHOCKWAVE IMPACT DUTY

Product description

SHOCKWAVE Impact Duty step drills are designed to deliver best-in-class performance in impact drivers and also the versatility to be used in drill drivers.
The 1/4" Hex shank with an optimised SHOCKZONE ensures maximum durability by preventing early shank breaks.
New Titanium Aluminium Nitride coating helps to reduce heat generation for 5x more life.
RAPID STRIKE TIP: Accurate start without walking and fast drilling without the need to pre-drill the material.
Dual spiral flute design: Optimised for impact driver speed and for smooth, jam-free drilling.
Laser engraved markings: Do not wear away with time.

All Features

Smallest diameter: 4 mm
Largest diameter: 12 mm
Shank size: 1/4 inch
Number of steps: 5
Overall length (mm): 83
Product range: Milwaukee SHOCKWAVE IMPACT DUTY

Brand MILWAUKEE
03188759
EAN 0045242505173
Supplier number MILWAUKEE 48899262

Frequently asked questions about this product

Answered by specialists

What hole sizes can you drill with this step bit?: This step drill bit covers 5 diameter steps: 4 mm, 6 mm, 8 mm, 10 mm, and 12 mm in 2 mm increments.
Is this step drill bit suitable for impact drivers?: Yes, with its 1/4" hex shank and SHOCKWAVE IMPACT DUTY design, it is engineered for impact drivers and drill drivers.
Do you need to pilot drill before using this bit?: No, the RAPID STRIKE tip provides accurate starts without walking and eliminates the need for pre-drilling.
What is the benefit of the TiAlN coating?: The titanium aluminum nitride coating reduces heat build-up and delivers up to 5 times longer service life.
Will the step size markings wear off over time?: No, the size markings are laser engraved to remain clearly readable throughout use.