Usage Tips:Pure copper material: Made of metal material, highly conductive, anti-oxidation. Copper terminals is not as thick as other ring terminals, cheaper and lighter, easy to use without heavier-duty crimpers. Open barrel design: Ring terminal connectors is designed with a special open barrel, making it perfect for solid or stranded wires . copper ring terminal working temperature range -30- 60 Celsius ( - 22-140 Fahrenheit). Convenient connection: Ring terminals is suitable for various electronic components, copper terminals can be easily connected to the cable device during operation, and can be quickly disconnected in an emergency case. Wide application: Open barrel copper ring can be crimped or welded, and the ring connector is perfectly matched with the wire connection of cars, motorcycles, home appliances, and power distribution cabinets. Specifications: Types: M3, M4, M5, M6, M8, M10 Colour:Golden Material:metal Package Contents: 50 x M3 Ring Cable Lugs 20 x M4 Ring Cable Lugs 20 x M5 Ring Cable Lugs 20 x M6 Ring Cable Lugs 20 x M8 Ring Cable Lugs 20 x M10 Ring Cable Lugs Only the above package content, other products are not included. Note: Light shooting 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.