Masonry drill bit Irwin 12 mm × 300/400 mm for concrete and brick, SDS-plus compatible shank

The Irwin masonry drill bit 12 mm × 300/400 mm is designed for drilling in concrete, brick and general masonry. It features a carbide tip to resist wear and maintain cutting performance, and an SDS‑Plus compatible shank that provides secure engagement with rotary hammer drills. Available with usable lengths of 300 mm and 400 mm, this drill bit is intended for anchor holes, dowel installation and through‑hole drilling in construction and renovation projects.

Advantages

The carbide tip increases durability and sustains drilling speed in abrasive materials such as concrete and mortar. The SDS‑Plus compatible shank ensures reliable retention and quick bit changes in compatible rotary hammers. The 12 mm diameter offers a balance between hole strength and material removal rate, suitable for standard anchors and fixings. Two usable length options provide flexibility for shallow and deeper drilling tasks without compromising bit stability.

Suitable for

• Drilling anchor and dowel holes in concrete
• Through‑hole drilling in brick and masonry walls
• Renovation tasks requiring medium‑diameter masonry holes
• Use with SDS‑Plus rotary hammer drills for construction sites

Key specifications

• Diameter: 12 mm
• Usable lengths: 300 mm and 400 mm
• Tip material: carbide
• Shank type: SDS‑Plus compatible
• Intended materials: concrete, brick, masonry

How to use

Secure the drill bit in an SDS‑Plus compatible rotary hammer according to the drill's instructions. Select the hammer/drill mode appropriate for masonry. Mark the drilling location and position the bit squarely against the surface. Start drilling at low speed to create a guide recess, then apply steady pressure while allowing the tool to do the work. Withdraw the bit periodically to clear debris when drilling deep holes. After finishing, remove dust from the hole before inserting anchors or fixings.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, hearing protection and dust mask. Match drill length to the required hole depth to avoid unnecessary bit flexing. For reinforced concrete, verify armoring location before drilling and use a bit designed for rebar contact if needed.