Concrete Slab Insert With Flange 1″, Zinc, NPSM Threads
https://hotfix.nsiindustries.com/product/concrete-slab-insert-with-flange-1-zinc-npsm-threads/
The Bridgeport 1″ Zinc Die Cast Concrete Slab Insert With Flange is ideal for threaded rigid or IMC conduit applications encased in poured or prefabricated concrete slabs. This slab insert features a fitting flange end.