DEWALT EXTREME SDS-plus Concrete Drill Bit 12mm x 450mm x 400mm 2 Cutter DEWDT9557-QZ

Description

High-Speed Drilling Performance for Demanding Concrete Work

When you’re drilling into reinforced masonry, concrete, stone, or brick, speed and consistency matter on-site. The DEWALT EXTREME SDS-plus Concrete Drill Bit is engineered with a solid 2-cutter carbide tip designed to deliver fast, aggressive cutting action while maintaining clean, controlled holes.

The 4-flute spiral design helps efficiently remove dust and debris during drilling, reducing heat build-up and helping maintain steady drilling performance over longer runs. For electricians and contractors working across multiple fixings—whether for anchors, plugs, or clearance holes—this means fewer delays, less bit binding, and improved productivity on every job.

Built for use with SDS-plus hammer drills (corded or cordless), it’s a reliable choice when you need consistent performance across repetitive drilling tasks in tough base materials.

Built for Durability, Strength & Jobsite Reliability

On busy construction and maintenance sites, tool failure is not an option. This EXTREME range bit is built with a hardened steel body designed to withstand high-impact hammer drilling while reducing the risk of breakage under load.

The carbide tips are securely brazed to the body, creating a strong, durable bond that supports long service life even in demanding trade environments. The reinforced central core design improves energy transmission from drill to tip, ensuring efficient power delivery where it matters most.

For licensed electricians and contractors working to tight deadlines, this means fewer bit changes, less downtime, and more confidence when drilling through hard masonry and concrete substrates.

Trade-Ready Efficiency for Electrical Installations & Site Work

Designed with professional installers in mind, the DEWALT EXTREME SDS-plus 12mm x 450mm drill bit is ideal for deep access drilling where standard-length bits fall short. The extended 450mm total length and 400mm working length allow electricians to reach recessed areas, conduit pathways, and structural mounting points with ease.

Whether you’re working on residential fit-offs, commercial fit-outs, or maintenance upgrades, this bit supports fast installation of anchors, fixings, and cable management systems—helping you keep projects moving without unnecessary tool changes or delays.

Backed by DEWALT’s trade-focused engineering, it’s a practical addition for electricians who need dependable performance and consistent results across multiple job sites.

Key Specs

• Product Type: SDS-plus concrete drill bit
• Brand: DEWALT EXTREME
• Diameter: 12mm
• Total Length: 450mm
• Working Length: 400mm
• Cutter Type: 2-cutter carbide tip
• Fitment: SDS-plus hammer drills (corded and cordless)
• Application: Masonry, concrete, brick, stone, blockwork

Ideal For

• Licensed electricians and electrical contractors
• Commercial and residential construction work
• Drilling anchor and plug holes for electrical installations
• Running conduit and mounting fixtures in concrete structures
• Maintenance and facilities upgrade projects
• Builders and site installation teams requiring deep drilling access