A slogging spanner is a type of wrench or spanner that is used to apply torque to a square or hexagonal nut or bolt head. The unique design of the slogging spanner allows it to be used in tight spaces and awkward angles with an impact wrench or hammer. A slogging spanner is often used in heavy-duty industrial applications, and its large size and heavy-duty construction make it ideal for use in situations where a lot of torque is required. Slogging spanners are single ended with either a ring or open end.