Which machines are compatible with this hammer drill bit?

This bit fits all rotary hammers equipped with an SDS-plus chuck.

What are the dimensions of this bit?

It has a diameter of 25 mm, an overall length of 450 mm, and a working length of 400 mm.

What is the benefit of the 4-cutter head?

The 4 cutters produce exact round holes and reduce the risk of jamming when hitting rebar.

Which materials is this bit designed for?

It is designed for drilling into masonry, reinforced concrete, and standard concrete.

What is the purpose of the 4-flute design?

The 4 flutes ensure rapid and efficient dust and debris extraction during drilling.

MILWAUKEE 4932356509 SDS-Plus MX4 hammer drill 4-coil 25x450mm

Name: MILWAUKEE 4932356509 SDS-Plus MX4 hammer drill 4-coil 25x450mm
Brand: MILWAUKEE
SKU: 02879778
Price: 65.6 EUR
Availability: InStock

Supplier number: MILWAUKEE 4932356509 | EAN 4002395321025

Recommended Retail Price €137.21

65.60 tax incl.

€54.21 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered as of 05/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

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Accurate drilling through reinforced concrete

Practical benefits

Perfectly round drilled holes: The symmetrical 4-cutter head of the Milwaukee MX4 prevents jamming against rebar and delivers optimal anchor fitting.
Rapid drilling dust removal: With the high-volume 4-flute design, you clear debris quickly to reduce friction and heat during deep drilling.
Exact spot drilling accuracy: The sharp centering tip lets you start drilling precisely on smooth concrete without slipping.

In a nutshell

The right choise for

Drill smoothly and with full control through reinforced concrete, masonry, and natural stone using the Milwaukee SDS-Plus MX4 hammer drill bit. Its symmetrical 4-cutter head with a carbide tip creates accurate, round holes for heavy anchor fixings while preventing jamming on rebar. The sharp centering tip lets you start drilling with pinpoint precision on smooth surfaces without slipping. Featuring a 25 mm diameter, 450 mm total length, and 400 mm working length, it easily handles deep penetrations for conduits, pipes, and cables through thick walls and floors. Meanwhile, the high-volume 4-flute design rapidly clears dust and debris to reduce friction and heat buildup during demanding drilling tasks.

Product information FAQ

€65.60

In stock - tax incl.

Key features according to our expert

Diameter: 25 mm
Drill bit type: Hammer drill bit
Overall length: 450 mm
Shank type: SDS-plus
Material (drill bit): Carbide tip
Number of cutting edges: 4 ea
Cutting length: 400 mm

Product description

The Milwaukee MX4 SDS-Plus drill bit is engineered for the toughest applications, featuring innovative fully welded solid carbide tip technology (up to Ø 20 mm) for maximum durability in rebar and unmatched drilling speed in concrete.
4-Cutter solid carbide tip: Enhanced geometry with a sharp centering tip, rebar guards, and new dust grooves delivers clean starts, precise holes, and maximum life when drilling through rebar - even under extreme jobsite conditions.
Optimised flute design with reinforced core: A thicker core combined with alternating SPEED and HEAVY-DUTY spirals ensures fast debris removal, reduced friction, and superior stability in demanding applications.
Convex shank for maximum energy transfer: The convex shank end optimises energy transfer from tool to tip, boosting impact force, drilling efficiency, and jobsite productivity.
One-Piece slotted carbide tip for Ø >20 mm: For large-diameter concrete drilling, this design offers exceptional strength, extended bit life, and break resistance in heavy-duty use.
PGM certified: Meets industry standards for precision and safety, making it the ideal choice for anchor setting.
Made in Germany: Manufactured to the highest standards for uncompromising quality, reliability, and performance on every jobsite.

All Features

Diameter: 25 mm
Drill bit type: Hammer drill bit
Overall length: 450 mm
Shank type: SDS-plus
Material (drill bit): Carbide tip
Number of cutting edges: 4 ea
Cutting length: 400 mm
Overall length (mm): 450
Pre-drilling: Suitable
Working length (mm): 400

Brand MILWAUKEE
02879778
EAN 4002395321025
Supplier number MILWAUKEE 4932356509

Frequently asked questions about this product

Answered by specialists

Which machines are compatible with this hammer drill bit?: This bit fits all rotary hammers equipped with an SDS-plus chuck.
What are the dimensions of this bit?: It has a diameter of 25 mm, an overall length of 450 mm, and a working length of 400 mm.
What is the benefit of the 4-cutter head?: The 4 cutters produce exact round holes and reduce the risk of jamming when hitting rebar.
Which materials is this bit designed for?: It is designed for drilling into masonry, reinforced concrete, and standard concrete.
What is the purpose of the 4-flute design?: The 4 flutes ensure rapid and efficient dust and debris extraction during drilling.