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The IRWIN 26137091 is a masonry drill bit designed for drilling into concrete, brick, block, and similar hard masonry materials. With a 1/4-inch diameter, a 4-inch usable flute length, and a 6-inch overall length, this bit suits a wide range of anchoring and fastening tasks. It is built for use with rotary hammer drills and standard hammer drills and is manufactured in Germany to meet demanding jobsite requirements. Electricians, plumbers, HVAC techs, and general contractors regularly reach for this size when setting anchors or routing penetrations through masonry walls and slabs.
This bit is well suited for residential and light commercial applications where 1/4-inch diameter holes are needed in concrete or masonry substrates. Common tasks include setting sleeve anchors, drop-in anchors, or Tapcon-style fasteners in concrete block, poured concrete, or brick. The 6-inch overall length provides enough reach for standard wall thickness penetrations without requiring an extension.
Designed as an OEM-style masonry drill bit suitable for use with standard keyed or keyless chuck hammer drills and rotary hammer drills that accept SDS-less round shank bits in residential and commercial masonry applications.
Installation is performed by trades including electricians, plumbers, and HVAC technicians when routing penetrations or setting fasteners in masonry. Always wear appropriate eye and respiratory protection when drilling concrete or masonry. Use the correct hammer drill setting for the material and ensure the bit is fully seated in the chuck before operation. Refer to local building codes for penetration sealing requirements where fire-rated assemblies are involved.
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