1. Made of copper material, tin-plated on the surface, anti-oxidation, anti-corrosion, convenient and quick installation. 2. With tin-plated anti-oxidation protection, the product performance is more stable, the connection is reliable, and the conductivity is strong. 3. Scope of application: widely used in household appliances, automobiles, electrical industry, mechanical equipment, power distribution cabinets, etc. 4. Working temperature: -55-105 degrees Celsius 5. Material: copper 6. Interface type: AC/DC 7. Product specifications: Bare tube: Tube-shaped bare end EN25-16, suitable for wire diameter of 25 square millimeters, product length of 16mm; Tube-shaped bare end EN35-16, suitable for wire diameter 35 square millimeters, product length 16mm; Tube-shaped bare end EN50-20, suitable for wire diameter 50 square millimeters, product length 20mm; Tube-shaped bare end EN70-20, suitable for wire diameter of 70 square millimeters, product length 20mm; Heat shrinkable tube: Black heat shrinkable tube 2: 1 diameter 10MM*50MM Black heat shrinkable tube 2: 1 diameter 12MM*50MM Black heat shrinkable tube 2: 1 diameter 14MM*50MM Black heat shrinkable tube 2: 1 diameter 16MM*50MM 8. Product composition: Bare tube EN: EN25-16 x 50 EN35-16 x 50 EN50-20 x 25 EN70-20 x 15 Heat shrinkable tube: Black heat shrink tube 2: 1 diameter 10MM*50MM x 25 Black heat shrink tube 2: 1 diameter 12MM*50MM x 25 Black heat shrinkable tube 2: 1 diameter 14MM*50MM x 15 Black heat shrinkable tube 2: 1 diameter 16MM*50MM x 10