1-Piece SDS-Max Core Bit - 4" x 11-3/8"

The 4" x 11-3/8" One Piece SDS-MAX Core Bit is a heavy-duty masonry drilling attachment designed for fast, high-performance cutting of large-diameter holes in concrete, brick, and block using SDS-MAX rotary hammer systems.

Built from one-piece hardened steel construction, it offers excellent strength, rigidity, and resistance to wear under repeated high-impact hammer drilling. The 4-inch diameter is ideal for major utility penetrations, while the 11-3/8-inch overall length provides extended reach for deeper drilling through structural materials.

This core bit is engineered to maintain cutting efficiency while reducing vibration and deflection compared to segmented alternatives. The SDS-MAX shank ensures a secure, high-power connection to compatible rotary hammers, delivering optimal energy transfer and consistent performance on demanding jobsites.

Common applications include:

• Large conduit and pipe penetrations
• Plumbing and mechanical system installations
• HVAC duct and vent openings
• Commercial and industrial concrete drilling