1800+328 Ferrule crimping Tool Kit: Includes wire ferrule crimper+ 1800PCS wire ferrule terminals + 328 assorted heat shrink tubes , perfect for complex projects without extra purchases. Meet the requirements of 0.25-10mm²/23-7AWG specification wire. Heat Shrink Tubes for Waterproof Protection: Extra 328 tubes provide secure insulation against moisture and corrosion, ensuring long-lasting electrical connections in automotive or household use. Premium Copper Wire Ferrule Kit: Oxygen-free copper cores deliver "99.9% conductivity" prevent voltage drop & overheating in car batteries/home circuits, outperforming zinc-plated competitors by 3x lifespan. Precision Ratcheting Ferrule Crimper: Self-adjusting jaws automatically lock onto terminal sizes (23-7 AWG), delivering "perfectly secured connections in one squeeze"no slipped wires, just 50% less hand fatigue. Zero-Frustration Organization: Wire ferrules connectors kit Case with 8 compartments instantly matc