Digital Spot welder X9 1.Digital keypad,simple,easy operation 2.Double sided welding 3.Seft check and overhear protection SUPER Digital spot welder X9Suitable for welding washers,special washers,wriggle wire,rivets,sheet patching,carbon rod heating and shrinking.Features:Microprocessor optimizes the welding parametersSynergetic adjustments,automatically sets the welding parameters acording to the ...