Cast Iron Single Hole Plug can be used to seal off a portion of a well. It is composed of drillable cast iron. It is simple to establish using a wireline pressure setting instrument, coil tubing, or a pipe. The plug is made to prevent preset when going into the hole and will securely set in any hardness of the casing. Cast Iron Single Hole Plug is made to fit into crevices or holes. In order to segregate wellbore portions for stimulation/treatment or plug and abandonment, this plug is used.