Masonry Drill Bit Irwin 3 x 70 mm for concrete, brick and stone

The Irwin masonry drill bit 3 x 70 mm is designed for making small-diameter holes in concrete, brick and natural stone. Compatible with hammer and rotary drills, this 3 mm diameter, 70 mm overall length bit delivers precise, straight holes for anchors, wall plugs and cable routing in installation and repair work. The tip geometry and hardened cutting edges are engineered to penetrate hard masonry while maintaining hole accuracy for repeatable results.

Advantages

This masonry drill bit offers accurate hole sizing and stable drilling performance in hard substrates. Its hardened cutting edges prolong service life compared with standard bits, and the compact 70 mm length gives good control in confined spaces and shallow drilling tasks. The bit's diameter and tip form reduce chipping in brick and stone and enable clean, consistent anchor seating.

Suitable for

• Drilling holes for plastic or metal wall plugs in concrete and brick
• Cable and conduit routing through masonry
• Small-diameter fixture installation and light repair work
• On-site drilling where short, precise holes are required

Key specifications

• Diameter: 3 mm
• Total length: 70 mm
• Designed for use in: concrete, brick, natural stone
• Intended drill types: hammer drills and rotary drills
• Tip: hardened cutting tip for masonry

How to use

Mark the hole position, secure the drill perpendicular to the surface and start at low speed to establish the guide point. Use the hammer function only when drilling into concrete or hard stone; for softer brick or thin stone, a rotary setting may be sufficient. Apply steady pressure without forcing the bit and periodically withdraw to clear dust from the hole. Match drill speed and hammer action to the substrate to avoid overheating or bit damage.

Usage recommendations

Use appropriate personal protective equipment including safety glasses and hearing protection. Choose drill settings appropriate for the material and allow the bit to cool between extended drilling runs. For reliable anchor performance, verify hole depth and clean dust from the hole before inserting plugs or anchors.