1-1/16" x 23" Simpson MDMX10623Q SDS-Max Shank Quad Head Bit Channel Post Base 6-lobe drive recess – Secure

6-lobe drive recess – Secure engagement and longer bit life

and advanced DIYers looking for a serious upgrade from plastic or wedge anchors

The Strong-Tie AC6RZ post base features a G185 ZMAX galvanized finish for added corrosion resistance and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153

Seismic Applications: Ideal for earthquake retrofits

1-1/16" x 23" Simpson MDMX10623Q SDS-Max Shank Quad Head Bit Channel Post Base 6-lobe drive recess – SecureThe 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,