Easy identification - part no rolled stamped on the outside surface | Contains a conduit set screw used to hold the conduit liner in place | Machined from 360 brass alloy bar stock to ensure consistent dimensional stability | Designed to be used with Slip-on nozzle assemblies | A machined thread is on the outside surface to allow the nozzle insulator to thread over holding the Slip-on nozzle in place during the welding process | Recessed Tips are generally used for higher heat applications where longer electrical stick-out is required, or in cases where the nozzle may touch the work piece (tack, spot, and stitch) | Flush Tips are generally used where a shorter electrical stick-out is used sometimes resulting in shorter/tighter arc lengths, this brings the tip closer to the work piece | Protruding Tips are generally used when welding open root pipe or any joint that requires the welder to get into a tight weld joint | However the down side to this is the chance of arcing the tip to the work piece, which could damage front end parts resulting in downtime needed to replace