KT2419 STK21T is a high-performance custom 21‑core shielded cable designed for stable signal and power transmission in high‑temperature, high‑reliability equipment. Built with tinned copper conductors, FEP insulation and jacket, braided shielding, and fiberglass fillers, it provides excellent anti‑interference, heat resistance, and mechanical durability for industrial, instrumentation, and harsh‑environment applications.