It is used for salvaging the drilling rod and the rod joints.

The overshot is a rotary fishing tool designed to externally engage and retrieve fish such as drill pipe, drill collars, tubing, or casing from the wellbore. Manufactured in compliance with API Spec 7K, this tool features a spiral or basket grapple that grips the external surface of the fish when rotated and lowered. The overshot assembly includes a top sub for connection to the work string, a bowl that houses the grapple, and a guide to facilitate entry of the fish into the tool. Available with both self-releasing and non-releasing grapple configurations, the overshot provides versatile retrieval capabilities for various fishing applications.