Static Discharger Noise countermeasure product. ☆Includes 3 each for M4, 5, 6, and 8 (hole diameters Φ4.5, 6, 8mm)☆ ※Total of 12 pieces ★For cars, motorcycles, and other equipment! Crimped with a special tool and pre-soldered, so the wires won't come loose even if they're separated. It takes effort, but quality comes first! Crimping terminals are made by "Nichifu". When using, please cut to your desired length, as they are made longer. Also, fray the tip and use it. ★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 car parts... Earthing Compatible car manufacturers... Universal Car parts