Recessed Nozzle—Recessed nozzles are the most common and work well in most welding applications. They let your wire stick out _1/2”-_3/4” from the contact tip, so the tip is away from the high heat of the arc and lasts longer. When your wire sticks out, there is also less of a chance it will melt and fuse to the contact tip.

Tapered Nozzle—Tapered nozzles are good for welding in tight spaces, such as corners, and on edges.

Flush Nozzle—Flush nozzles let your wire stick out _1/4”-_1/2” from the contact tip, so the tip is close to your workpiece. These nozzles are good for welding thin materials under low voltages, decreasing the risk of burning through your workpiece.