This Weldmark by Tweco MIG gun has a max amperage rating of 300 amps at 60% duty cycle. It includes a Miller® style rear connection with front and rear strain supports, and uses 0.035-0.045 in solid MIG wire. It has a 15 ft hose length. The neck is made of aluminum, with a standard fixed 45° neck tube angle, is air cooled, and uses contact tips. You'll enjoy the ergonomic oval shaped handle for improved operator comfort. Rated for SMAW and MIG (GMAW) process for heavy work duty industrial fabrication. Made in Mexico.