This Alumiweld System lets you repair aluminum and pot metal at home for a fraction of the cost. Even difficult to replace die-cast zinc and pot metal parts, common on vintage cars, can be repaired and saved. Use with a propane torch or the Jeweler's Torch. Rods are approximately 9" long. This unique soldering type process requires no flux and produces a strong repair that can be filed, threaded, polished and plated. Step by step instructions included.