The 45/90° 400/600A spare head is designed for more intensive welding applications where higher operating currents are required. Using heavy-duty materials, this head is capable of handling currents up to 600A, making it ideal for welding thicker materials and in high-power applications. Its 45° and 90° angle adjustment capabilities allow it to work comfortably in harsh environments, and its reliability in extreme temperatures ensures high welding efficiency and precision.