60 piece copper ring terminals - AWG 2468 12 ring terminals are made of 100% pure copper, with maximum conductivity and tin plated surface to prevent corrosion. 60 pieces of heat shrinkable tubes - heat shrinkable tubes are made of high-quality materials, which are environmentally friendly and durable. They are safe and reliable, and can withstand up to 600V, 290 ° F (about 125.0 ° C). Easy to use - its US standard size allows you to easily solder or crimp at the end of the cable. In addition, we also have a box, so you don't have to worry about confusion. Wide range of applications - very suitable for solar cell arrays, inverter cables, automotive batteries, dual battery systems, ATVs, recreational vehicles, golf carts, caravans, 4x4s, automotive amplifier power cables and ground cables. Buy with confidence - each ECNLAN copper ring terminal kit has been tested. Our goal is to continuously improve product quality. If you have any questions about our products, you can contact us. Online 24 hours a day.