This is essentially a labor charge item to add a 1/2" NPT full or half coupling to a Spike blank slate custom (not when we do the welding locally). This item should only be added to a cart that has a Spike blank slate custom kettle in it. You must specify positioning and whether it is for a half or full coupling. Full coupling can be threaded into from inside or outside the kettle. A half coupling can only be threaded in from outside the kettle such as a thermometer or temp probe.