486310-050H QuickCable 1/0 GA Fusion Solder Heavy Wall Lugs 1/2 Inches Stud Battery Connector (50 PCS) - Fusion connectors come ready-to-use with solder and flux preloaded in the barrel. Made of cast copper and tin plated for added conductivity and corrosion resistance for superior reliability and years of dependable service. Fusion solder on connections are up to 70% stronger than crimp on connectors and provide a more consistent quality than any other solder method including traditional wire solder and solder slug. Faster and less confusing and more cost effective than multi-component solder slug programs and they are especially good in the presence of destructive vibration or corrosive chemicals. No learning curve - if you can use a torch, you can make a quality connection,Made of cast copper alloy, tin plated for added conductivity and corrosion resistance,Superior reliability for years of dependable service,Up to 70% stronger than crimp method,More consistent quality than any other solder method including traditional wire solder and solder slug,Especially good in presence of destructive vibration or corrosive chemicals,Faster, less confusing, and less costly than multi-component solder slug programs,Fasteners Included,Kits are available