The POLARIS compression connectors are crafted from premium grade aluminum, ensuring exceptional conductivity and minimal signal loss. Additionally, a tin-plated finish provides superior corrosion resistance, even in harsh environments. The die color-coded markings simplify cable selection, while installation requires only a single standard crimp tool, saving you time and effort. These lugs are also compatible with flex rated cable, class K, H, G, I, M, and DLO. Useful in all environments up to 194 degrees Fahrenheit (90 C, AL9CU), these connectors are cULus and UL486A-486-B certified and rated for use with class B and C wires. The innovative design features of our compression connectors don.t just make connections faster.they also make connections better.