The high-silver brazing alloys and flux in these kits are commonly used for brazing joints on HVAC equipment, drill bits, machine parts, and other items that will be subject to high vibration. High-silver brazing alloys provide better capillary action than brazing alloys with less silver, allowing them to flow into tight spaces without relying on gravity or other external forces. They provide filler metal for joining copper to steel, copper to stainless steel, brass to steel, brass to stainless steel, stainless steel to stainless steel, steel to stainless steel, and steel to steel.