The weld mass is a switchable magnetic clamp that helps every welder to work as quickly as possible and with minimal worries. You just need to place it on a clean surface, then turn on and start the welding process. No time wasted preparing paint or rust grounding points, which saves time and maximizes efficiency. Full control over on and off is offered, so all metal shavings will fall off without the need for complicated cleaning. You can work on any type of surface.