Fss Shallow Depth 1-Gang Cast Device Box | Circuit Protection | For Reducing Conduit Entries to a Smaller Size in Threaded Rigid and Imc Conduit Systems | For Use With Rigid/imc Conduit | For Use With Threaded Metal Conduit and Imc | Splicer / Reducer | Use With 8 Popular Tips and Can Also Use 3 Different Nut Driver Sizes. the Blades Are Quick and Easy to Change Out for Use as Well | Used With Locknut to Terminate Rigid and Imc Conduit to an Enclosure, Provides a Smooth Pulling SurfaceFurbay Electric Supp