Red Head LDT-1240 Large Diameter Tapcon 1/2-Inch by 4-Inch Anchor (25 per Box)$$Hardware

Cuts its Own Threads into Concrete Anchor Bodies are Made of Hardened Carbon Steel and Zinc Plated, Grade 11 Finished Hex Washer Head, with Anti-Rotation Serrations Anchor is Stamped with a Length Identification Code Use Standard Drill Bits