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The EAGLE CUTTING TOOL CDW-40000-1-1/4-7 is a 4 inch wet core drill bit designed for cutting clean, precise holes through concrete, masonry, and similar hard materials. Wet core drilling uses water as a coolant and cutting aid, extending bit life and reducing airborne dust during operation. At 8.08 pounds, this is a substantial, professional-grade tool suited for licensed tradespeople working in commercial and residential construction. Electricians, plumbers, and HVAC techs commonly reach for wet core bits when penetrating concrete slabs, block walls, or foundation sections to route conduit, pipe, or ductwork.
This bit is well suited for trade applications that require a 4 inch bore through hard substrates. Typical scenarios include routing drain lines through concrete floors, sleeving conduit through block walls, or creating HVAC penetrations in poured concrete. The wet drilling method is preferred in occupied or enclosed spaces where dust control is a priority and where prolonged cutting runs demand consistent cooling to preserve the cutting segment.
Designed for use with wet core drilling machines that accept a 1-1/4 inch by 7 thread (1-1/4-7) arbor connection, which is a common standard thread size on professional core drill rigs used across electrical, plumbing, and HVAC trades.
Wet core drilling should be performed by a qualified tradesperson familiar with core drill rig setup and water feed systems. Ensure the drill rig is properly secured or anchored before operation to prevent bit walking or binding. Always establish a controlled water supply to the bit before beginning the cut, and never run a wet core bit dry as this will damage the cutting segments. Follow applicable OSHA silica dust guidelines and local codes when drilling in occupied structures.
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