Copper connectors, hammer-lug tool Heat shrinkable tubes for air tightness and flame retardancy. Ideal to use in various applications This wire connector kit offers a wide range of ring terminals connectors in sizes 2 AWG, 4 AWG, 6 AWG, 8 AWG, 10 AWG, 12AWG, along with multiple SC models and heat shrink tubing. The connectors are made of high - quality pure copper, resistant to high temperature and corrosion, ensuring maximum conductivity. The hammer lug crimper, made of high - strength iron, is strong enough for long - term use. The standard bell - mouth design of the connectors allows cables to enter easily, and the open design helps in detecting issues during crimping or welding. The heat shrinkable tubes, made of high - quality materials, have good flame retardancy, electrical insulation, and air - tightness. The kit is suitable for numerous applications like distribution boxes, homes, solar panels, and more. With a crimping tool that supports wire gauges from 8AWG to 0000AWG, it simplifies wiring tasks for DIY enthusiasts and professionals alike, bringing convenience to various wiring projects.