5" X 22" One Piece Spline Core Bit

The 5" x 22" One Piece Spline Core Bit is a heavy-duty drilling attachment designed for cutting large-diameter, deep holes in concrete, brick, and block using spline-drive rotary hammers.

Manufactured with a one-piece hardened steel body, this core bit delivers exceptional strength and durability for demanding, high-impact applications. The 5-inch cutting diameter is ideal for major utility penetrations, including large conduit, pipe, and HVAC openings, while the extended 22-inch length allows for deep drilling through thick walls and structural materials.

Engineered for efficient material removal, the bit cuts a precise circular path and leaves a solid core that can be easily extracted. Its spline shank ensures a secure fit in compatible rotary hammers, maximizing torque transfer and maintaining consistent performance under load.

Common applications include:

• Large-diameter concrete and masonry drilling
• Deep structural and through-wall penetrations
• Plumbing, electrical, and HVAC installations
• Commercial and industrial construction projects