Material: The wire connector nut kit is made of thickened brass, high conductivity and great current carrying capacity. Features: The acid-washed surface makes it corrosion resistance. Come with the zinc-plated hex screws, oxidation resistance, the quick wiring terminals provide a stable and long-term connection. Easy to use: Simply plug in the stripped cable and tighten the screws. The 3:1 heat shrink tubing makes sure good sealing and waterproof performance. Application: Rated for up to 60A, the screw terminal suits for high-power applications. It can be used in household appliances, automobiles, power distribution and industrial equipment. Package Content: 10pcs 10AWG wire connector nut, 20pcs screws, 10pcs heat shrink tubes, 1pc wrench.