The Simpson Strong-Tie MDMX10623Q is a heavy-duty SDS-Max shank rotary hammer bit designed for efficient drilling into concrete and masonry. With a 1-1/16" diameter and 23" length, this quad head bit offers extended reach and clean boreholes for anchoring, mechanical, or electrical installs.

The carbide quad-cutting head and aggressive flute design improve drilling speed while reducing vibration and wear. Ideal for use with SDS-Max rotary hammers, this bit is built for professionals needing long-life performance in tough concrete jobs.

Key Features

• Bit Size: 1-1/16" diameter x 23" overall length
• Shank Type: SDS-Max for use with heavy-duty rotary hammer drills
• Quad Head Carbide Tip: Improves cutting speed, durability, and hole precision
• Aggressive Flute Geometry: Clears debris quickly for cleaner, faster drilling
• Applications: Anchoring, rebar doweling, conduit installation, and deep concrete boring