Weldmark by Tweco WMK22 series MIG nozzle is ideal for medium duty welding applications up to 250 amps. Made of copper, with an adjustable slip-on connection type, and a standard recessed extension bottleneck tip. Compatable with MIG guns such as Weldmark 250 Series, WeldSkill® 250, WeldSkill® WM250 or Professional Classic® No. 2. The 0.50 in bore size is perfect for regular corners and gaps. Packed in a hanging plastic bag, it is retail ready. Made in Mexico.