Static Discharger Noise Countermeasure Product. ☆Includes 2 each for M5, 6, 8, 10, and 12 (Hole diameters Φ4.5, 6, 8mm)☆ ※Total of 10 pieces ★For cars, motorcycles, equipment, etc.! Crimped with special tools and pre-soldered, so the wires won't come loose even if they're separated. It's time-consuming, but quality comes first! "Nichifu" crimp terminals are used. When using, please cut to your desired length, as they are made longer. Also, fray the tip before use. ★If you have any requests for size, combination, or other preferences, we will manufacture them within a possible range, so please feel free to contact us. This product discharges static electricity accumulated on the car body into the air. It is said to contribute to improved fuel efficiency and quietness, but the effect is unknown. Use by attaching it to the bolt part. It is said that installation on the negative terminal of the battery or ground points is effective. ※Please purchase with the understanding that this is DIY made. ※Please take responsibility for installation and use. Type of accessories...Earthing Compatible car manufacturers...Universal