Description: Package Includes: 10 Pieces quick wiring terminals with screw, 1 heat shrink tube and and 1 wrench for secure and efficient electrical connections Sturdy Construction: Waterproof circuit wire connecting terminals are made from strong brass, these copper wiring splicing connectors ensure high electrical conductivity and great temperature resistance Secure & Reliable: Circuit Connector features threaded bolt holes and tightening screw for accurate and stable cable joining, preventing loose connections Easy to Connect: These square quick wiring connection screw terminals with threaded holes, simple to install. Just insert the wires and tighten the screw, heat the shrink tube to complete the wiring Versatile Use: These circuit wire connect terminals are ideal for various electrical applications, household appliances, automotive, power industry, mechanical equipment and more Specification: Material: Copper, Steel, Tube Size Chart: 60A Square Sizes: 2.23x0.8x0.97cm, Inner Diameter: 6.5mm.  Screw Thread: M6. or 60A Round Sizes : 1.5x0.68cm, Inner Diameter: 3.6mm. Screw Thread: M3. or 80A Round Sizes: 1.98x0.9cm, Inner Diameter: 5.2mm. Screw Thread: M4. Package Includes: 10 Pieces Splicing Wire Connector Set 1 Wrench 1 Heat Shrink Tube