... Holder is a Perfect arrow magnetic design for holding surfaces together until they can be welded or soldered, and it can be ... the magnet metal frames are Red Painted and solidly riveted together. . USES: Used for all Angles in Welding, Soldering, Assembly, Marking ... -off, Pipe Installation, Hanging Applications, Metalwork’s, Tube Welding, Gluing Together Pieces, Flat Grinding etc.