Simpson 7/8 in. x 21 in. SDS-Max Quad-Head Carbide Drill Bit MDMX08721Q Anchors Thread grippers hold each bolt

Thread grippers hold each bolt in the same location and height

Secures 1/2"

For use with Simpson Strong-Tie AT-3G high-strength hybrid acrylic adhesive

Cutting Length 2-5/16"

Simpson 7/8 in. x 21 in. SDS-Max Quad-Head Carbide Drill Bit MDMX08721Q Anchors Thread grippers hold each boltKey Features Uniformly Brazed Carbide Inserts: Uniformly brazed carbide inserts resulting in longer bit life. Self Centering Tips: Self centering tips for accurate hole placement. Chromium Nickel Molybdenum Steel Alloy Body: Chromium nickel molybdenum steel alloy body ensures hammering quality and extended service life. Heat Treatment & Shot Peened Finish: Heat treatment procedures and shot peened finish increase surface hardness, drilling speed,