This replacement trigger switch is specifically designed for the MDX™-100 and MDX™-250 MIG guns, ensuring seamless compatibility and reliable performance. Manufactured by Miller Electric, this essential accessory is crafted with precision to enhance your welding experience. Originating from China, it meets the high standards expected from professional welding equipment, making it an indispensable component for maintaining the functionality of your MIG gun. Whether you're a seasoned welder or a newcomer, this trigger switch will help you achieve consistent results in your welding projects.