Nozzles are available in threaded and slip-on styles with a variety of orifice diameters for optimal shielding gas coverage. Use Quik Tip Contact Tips that are designed with a threaded taper lock that increases contact tip life by providing excellent heat transfer and electrical conductivity. A quick twist is all it takes to install Quik Tip Contact Tips. In case of burn nack, another quick twist will get you back on the job in moments.