Rotary SDS+ drill bit Irwin Drill SDS+ 8 x 240/300 mm for concrete, 8 mm diameter, 240 mm working length, 300 mm overall length

Irwin Drill SDS+ 8 x 240/300 mm is a rotary drill bit engineered for SDS+ hammer drills to create precise holes in concrete and masonry. With an 8 mm diameter, a 240 mm working length and a 300 mm overall length, this drill bit provides extended reach for deeper drilling tasks while maintaining compatibility with standard SDS+ chucks. The carbide tip and spiral fluting are designed to evacuate dust and chips efficiently, supporting steady drilling performance in reinforced concrete and general masonry work.

Advantages

The 8 mm diameter and long working length combine to enable deeper, accurate holes without changing to extensions. Its SDS+ shank ensures secure retention and rapid bit changes in hammer drills. The cutting geometry and carbide tip provide resistance to wear and improved hole quality in abrasive concrete. Spiral flutes promote effective debris removal, reducing binding and heat build-up during continuous drilling.

Suitable for

• Drilling holes for anchors and dowels in concrete and block
• Installing electrical conduit or plumbing through masonry walls
• Preparatory drilling for rebar locating and light demolition guides
• General professional and DIY concrete drilling where extended reach is required

Key specifications

• Drill bit type: Rotary SDS+ masonry bit
• Tip material: Carbide tip for concrete drilling
• Diameter: 8 mm
• Working length: 240 mm
• Overall length: 300 mm
• Shank type: SDS+ compatible shank
• Flute design: Spiral flutes for dust and chip evacuation

How to use

Install the Irwin SDS+ bit into the hammer drill’s SDS+ chuck until it locks securely. Select a drill mode appropriate for concrete (rotary hammer with impact). Mark the drilling point and start at low speed to create a guide before increasing to normal operating speed. Apply steady, moderate pressure—let the drill and carbide tip do the cutting. Periodically withdraw the bit to clear debris from the hole, especially when drilling deep to maintain efficiency and prevent overheating.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection and dust mask. For reinforced concrete, check for rebar before drilling and use a suitable rebar detection method. When drilling multiple holes, allow the bit to cool and clear chips regularly to prolong bit life and maintain hole accuracy.