Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8"

The HDIA hollow drop-in anchor is an internally threaded, flush-mount expansion anchor designed for attaching threaded rod to support a variety of conduit, cables and lighting. This anchor is ideal for use with hollow base materials such as CMU and hollow-core plank as well as in solid base materials such as brick and both normal-weight and lightweight concrete. The HDIA can easily be installed in both hollow and solid materials with a setting tool. Drill Bit Size: 5/8"Length Spec: 1-1/4"Manufacturer Name: Simpson Strong-TieAccepts Rod Size: 3/8"For Treated Lumber: yesMaterial: Die-cast Zamac 3 alloy shell with carbon-steel cone Note: Product dimensions may differ from picture. Please see above item description for specifications.