The male cone of fishing tool is a special tool for making thread and fishing from the inner hole of downhole, drill pipe, casing washing pipe, packer, water distributor, product distributor, etc. This kind of tool has a high fishing success rate for the pipe falling objects with coupling. Different fishing techniques can be realized by using the male cone together with the straight and reverse thread drill pipe and other tools. It is a long conical integral structure, which can be divided into two parts: joint and fishing screw.
