Which drill sizes are included in this set?

The set includes two step drill bits: 4 to 20 mm and 6 to 35 mm.

Which materials are these step drill bits designed for?

These bits are engineered for drilling into metals, including mild steel and stainless steel.

What is the benefit of the AlCrN coating?

The aluminium chromium nitride coating resists heat build-up and provides a significantly longer service life.

What type of shank do these bits have?

They feature a 3-flat secure grip shank to prevent slipping in standard drill chucks.

Do you need to pre-drill before using these bits?

No, the Rapid Strike tip ensures accurate starts without wandering or the need for pre-drilling.

MILWAUKEE 48899398 step drill set Cobalt AlCrN 2-piece

Name: MILWAUKEE 48899398 step drill set Cobalt AlCrN 2-piece
Brand: MILWAUKEE
SKU: 08088077
Price: 228.4 EUR
Availability: PreOrder

Supplier number: MILWAUKEE 48899398 | EAN 0045242529216

Recommended Retail Price €518.24

228.40 tax incl.

€188.76 excl. VAT (incl. all environmental contributions)

On order: delivered from 23/10/2026

set

Delivery by DHL

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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.
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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.
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Accurate holemaking through tough metal

Practical benefits

Milwaukee step drill bit set: The cobalt base material and AlCrN coating let you drill through stainless steel and mild steel with exceptional durability.
Precise starts without walking: The specialized centering tip ensures you begin drilling immediately at the exact spot without requiring pilot holes.
Secure non-slip chuck grip: The 3-flat shank design stops the bit from slipping in your chuck under high rotational torque.

In a nutshell

The right choise for

With the Milwaukee 48899398 step drill bit set, you can drill and enlarge holes from 4 to 35 mm in sheet metal and tough stainless steel without changing bits. Built from cobalt steel with a heat-resistant AlCrN coating, these bits deliver exceptional durability under demanding metalworking conditions. The Rapid Strike tip ensures fast, accurate starts right where you need them without wandering or pre-drilling, while the 3-flat shank prevents slipping in the drill chuck under high torque. This 2-piece set includes 4 to 20 mm and 6 to 35 mm bits, ideal for cable glands and conduit installations.

Product information FAQ

€228.40

tax incl.

Key features according to our expert

Smallest diameter: 4 mm
Largest diameter: 35 mm
Drill set type: Stair drill set
Quantity per set: 2

Supplied as standard

Includes 2 cobalt step drill bits: 4 - 20 mm, 6 - 35 mm
Includes 2 x step drill bits: 4 - 20 mm / 6 - 35 mm

Product description

New Aluminium Chromium Nitride (AlCrN) coating for 10x more life vs. MILWAUKEE standard step drill.
For steel and stainless steel.
RAPID STRIKE TIP: Accurate start without walking and fast drilling without the need to pre-drill the material.
Special tip and step geometry for jam-free performance - less risk of drill snagging when used with cordless tools and also prevents deformation of the drilled material.
Optimised 2 flute ground sharpened edge geometry for 2 x faster and smoother cutting.
With 3 flat secure grip to prevent step drill from slipping in the chuck and ensure maximum transmission of torque.
Laser engraved size markings for best long term visibility.

All Features

Smallest diameter: 4 mm
Largest diameter: 35 mm
Drill set type: Stair drill set
Quantity per set: 2
Number of steps: 42644

Brand MILWAUKEE
08088077
EAN 0045242529216
Supplier number MILWAUKEE 48899398

Frequently asked questions about this product

Answered by specialists

Which drill sizes are included in this set?: The set includes two step drill bits: 4 to 20 mm and 6 to 35 mm.
Which materials are these step drill bits designed for?: These bits are engineered for drilling into metals, including mild steel and stainless steel.
What is the benefit of the AlCrN coating?: The aluminium chromium nitride coating resists heat build-up and provides a significantly longer service life.
What type of shank do these bits have?: They feature a 3-flat secure grip shank to prevent slipping in standard drill chucks.
Do you need to pre-drill before using these bits?: No, the Rapid Strike tip ensures accurate starts without wandering or the need for pre-drilling.