Matching Pairs Welding Tools MatchOnline version Match each welding tool with its brief function. by Lorena Gonzalez 1 Grinder 2 Clamps 3 Speed square 4 Chipping Hammer 5 Wrench 6 Pliers 7 Welding Torch Secures workpieces firmly Grips a variety of nut and bolt heads. Prepares metal surface by grinding Removes slag after welding Used for gripping objects Core tool for melting metal Marks lines and angles