This product offers a package of 140 pieces, which includes a combination of 60 Ring Lug Terminals and 80 Heat Shrink Tubing pieces of different sizes. The ring lug terminals are produced from 100% annealed electrolytic grade copper that ensures optimal conductivity. With a tinned surface, these terminals are also protected against corrosion. The closed-end design of the terminals effectively seals out moisture, thus keeping your cables dry and corrosion-free. The wire and stud sizes are usefully stamped on the pad for clear identification. These ring lug terminals are perfect for establishing effective connections in electrical devices, battery power cables, and in electrical equipment distribution devices. They are tested and approved by UL, indicating high reliability and safety standards. The maximum recommended operating temperature for these ring lug terminals stands at 150°C (302°F). The bundled heat shrink tubing comes in two sizes, φ7.0mmx40mm and φ10.0mmx40mm, which are included in the quantities of 50 and 30 pieces respectively.