DEWALT Drop-In Anchor: 1/2"-13 Thread Size, 2 in Overall Lg, 5/8 in Dia, Steel, Zinc Plated, 50 PK. Features:Designed for anchoring into solid concreteOften used to suspend threaded rod for electrical, HVAC, and fire sprinkler systemsAllows for flush mounting and removal/reinsertion of boltsRequires a setting tool for proper installation.
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