Features Used in light to medium duty welding application up to 250 amperes Nozzle Housing - Cut and Formed from 122 DHP copper alloy tubing Nozzle Insert - machined from a solid brass allow and machining the internal threads to match the gas diffuser Nozzle insulator - made from G7 silicone material providing the electrical insulation needed from the gas diffuser Easy identification - Part No. rolled stamped on the outside surface 3-piece design - does not require an additional insulator Threads onto a standard EL gas diffuser 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.Specification Process - GMAW Fits Standard Gas Diffuser - Part No. EL52CT (Stock No. 1510-1109) Tier - Professional Material - 122 DHP Copper Alloy Outside Diameter - 0.875 in. Thread Size - Course Thread Overall Length - 3.018 in. Bore Size - .500 in. Contact Tip Relationship - Flush - 0.062 in. Recess - SKU: ORSNO92100