Which machines are compatible with this drill bit?

This bit features an SDS-MAX shank and is designed exclusively for rotary hammers with an SDS-MAX chuck, not SDS-plus.

What materials is this hammer drill bit suitable for?

You can use this drill bit in concrete, reinforced concrete, masonry, and natural stone.

What is the advantage of the 6-cutter head?

The 6 cutters deliver round holes and significantly reduce the risk of jamming when hitting reinforcing steel.

What are the exact dimensions of this drill bit?

The drill bit has a 24 mm diameter, a working length of 400 mm, and a total length of 540 mm.

Does this drill bit fit directly into an SDS-plus rotary hammer?

No, this bit requires an SDS-MAX chuck and will not fit directly into an SDS-plus machine.

MAKITA B-05446 sds-max ultramax concrete drill bit 24x540mm

Name: MAKITA B-05446 sds-max ultramax concrete drill bit 24x540mm
Brand: MAKITA
SKU: 02775447
Price: 61.8 EUR
Availability: PreOrder

Supplier number: MAKITA B-05446 | EAN 0088381248440

Recommended Retail Price €99.10

61.80 tax incl.

€51.07 excl. VAT (incl. all environmental contributions)

On order: delivered from 22/10/2026

Delivery by DHL

✆ Talk to a specialist

Reliable drilling with Makita Ultramax

Practical benefits

Efficient 6-cutter head design: The engineered 6-cutter geometry lets you drill smoothly through tough reinforced concrete.
Premium carbide drilling tip: The heavy-duty carbide tip delivers rounder holes, helping you set anchors with exact precision.
Solid SDS-MAX connection: The SDS-MAX shank ensures you transfer high impact energy directly to the drill tip.

In a nutshell

The right choise for

With the Makita B-05446 Ultramax sds-max hammer drill bit, you drill quickly and reliably through tough construction materials. Its robust 6-cutter head with a durable carbide tip reduces the risk of jamming when hitting steel rebar, ensuring clean and round holes for heavy-duty anchors. Thanks to a working length of 400 mm and a total length of 540 mm, you can easily complete deep through-holes in thick walls and floors. The solid sds-max shank transfers full impact energy directly from your rotary hammer to the 24 mm tip, delivering maximum drilling efficiency in reinforced concrete, stone, and masonry.

Product information FAQ

€61.80

tax incl.

Key features according to our expert

Diameter: 24 mm
Drill bit type: Hammer drill bit
Overall length: 540 mm
Shank type: SDS-max
Material (drill bit): Carbide tip
Number of cutting edges: 6
Cutting length: 400 mm
Product Range: Makita SDS-Max

Product description

Drill bit 24 x 400 / 540 mm, SDS-MAX

Drill bit with 6 cutting edges for concrete and stone with SDS-MAX connection. This bit has an overall length of 540 mm, a working length of 400 mm and a diameter of 24 mm.

Drill bit with 6 cutting edges for drilling in concrete and stone with SDS-MAX connection. Drills with 6 cutting edges are designed for drilling more precise holes. This drill bit is designed for reduced vibration. The self-centring carbide tip has an aggressive design for faster hole starting.

All Features

Diameter: 24 mm
Drill bit type: Hammer drill bit
Overall length: 540 mm
Shank type: SDS-max
Material (drill bit): Carbide tip
Number of cutting edges: 6
Cutting length: 400 mm
Internal diameter: 24.0 mm
Working length: 400 mm
Length: 540 mm
Product range: Makita SDS-Max

Brand MAKITA
02775447
EAN 0088381248440
Supplier number MAKITA B-05446

Frequently asked questions about this product

Answered by specialists

Which machines are compatible with this drill bit?: This bit features an SDS-MAX shank and is designed exclusively for rotary hammers with an SDS-MAX chuck, not SDS-plus.
What materials is this hammer drill bit suitable for?: You can use this drill bit in concrete, reinforced concrete, masonry, and natural stone.
What is the advantage of the 6-cutter head?: The 6 cutters deliver round holes and significantly reduce the risk of jamming when hitting reinforcing steel.
What are the exact dimensions of this drill bit?: The drill bit has a 24 mm diameter, a working length of 400 mm, and a total length of 540 mm.
Does this drill bit fit directly into an SDS-plus rotary hammer?: No, this bit requires an SDS-MAX chuck and will not fit directly into an SDS-plus machine.