Battery Cable Ends: battery terminal connectors are made of high-quality pure copper material, which provides high conductivity for maximum current, strong heat and resistance, high smoothness, can be crimped or welded, and . Heat Shrink Set: All 3: 1 heat shrink tubing kits are made of high-quality materials, strong flame retardancy, good electrical insulation, resistance, high temperature resistance and airtightness, thicker and more . Easy to Use: The electrical connectors adopt a standard bell-mouth design, which facilitates the insertion of wires and the connection of ring batteries. The window design can visually check whether the wires are inserted correctly, improving work efficiency. Multi-scenario Applications: wire connectors kit is suitable for cables, distribution boxes, homes, solar panels, machinery, electricity, automobiles, motorcycles, vehicles, boats, home appliances, RVs, houses and other applications. Ring Terminals Connectors: 150 pcs in total, including 70 pcs battery cable lugs, size of 2 AWG, 4 AWG, 6 AWG, 8 AWG, 10 AWG, 12AWG, and 80 pcs heat shrink tubing kits, size of Φ 1/4inch, Φ 3/8inch, and Φ 5/8inch, all wire terminals connectors are neatly packed comes in a convenient and clear storage case for easy portability. Material: Metal+Plastic colour: As shown Package Contents: 70 x SC terminal blocks 80 x heat shrink tubing Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.