The HVAC tools and equipment are used for brazing copper in motors, air-conditioners, meters, and refrigeration industries. Brazing rods can braze some pipes, the small copper braze job, and the art project. The low-melt solder is widely used for refrigerator copper tubes, air conditioner copper tube welding, copper product welding, DIY craft drift punches, and knife handle latches. 1. Clean the of the copper material to be welded; 2. Insert the stick into the welding or pen, and adjust the welding current and power as needed; 3. Contact the welding stick with the copper material to be welded to melt the contact; 4. Remove welding slag and remaining stick after cooling. 1. The flux is evenly distributed, and has good continuity; 2. The welding stick not get tangled during welding and not block the conduit; 3. There is less spatter and smog during welding, and the solder joints are firm; 4. Good fluidity during welding, strong caulking, and can into small spaces. For manual measurement, please allow slight errors in size. Before using these brazing rods, please keep proper ventilation, adhere to recommended temperature ranges, and wear appropriate safety gear during use., Weight: 0.23368999772 Pounds, Manufacturer: Gishbjka