kwb 044640 hardmetaal beton-spiraalboor 4 mm x 75 mm cilindrische schacht

For masons, tilers, and DIYers drilling anchor holes in concrete walls or floors, the kwb 044640 carbide-tipped spiral drill bit delivers clean, precise holes in hard materials. Its 4 mm diameter and 75 mm total length make it ideal for small-diameter fixings in concrete, masonry, and natural stone.

Key specifications

• Drill bit type: Concrete drill bit
• Material: Carbide-tipped (tungsten carbide)
• Diameter: 4 mm
• Total length: 75 mm
• Working length: 40 mm
• Shank type: Cylindrical shank
• Shank diameter: 4 mm
• Cutter design: 2-cutter
• Flute design: U-shape spiral
• Recommended application: Concrete, masonry, natural stone
• Standard compliance: DIN 8039
• Tool compatibility: Rotary drills, cordless drills (with rotary function)
• Quantity per pack: 1 piece

Why choose it

The carbide tip withstands the abrasive nature of concrete, ensuring longer life and consistent performance. The U-shape spiral flute efficiently removes dust, reducing clogging and heat buildup for faster drilling.

Ideal use cases

• Installing wall plugs and anchors in concrete
• Drilling holes for cable conduits in masonry
• Creating pilot holes for larger fasteners in natural stone

Good to know

Use with a rotary drill or a cordless drill with rotary function. Do not use in hammer mode; this bit is designed for rotary drilling only.