Pure copper material: Made of high quality metal material, highly conductive, . Copper terminals is not as thick as other ring terminals, cheaper and lighter, easy to use without heavier-duty crimpers. Open design: Ring terminal connectors is designed with a special open , 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 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 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, , M5, M6, M8, M10 Colour:Golden Material:metal Package Contents: 50 * M3 Ring Cable Lugs 20 * Ring Cable Lugs 20 * M5 Ring Cable Lugs 20 * M6 Ring Cable Lugs 20 * M8 Ring Cable Lugs 20 * M10 Ring Cable Lugs Only the above package content, other products are not included. Note: Light 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.