Dual-Thread Compatibility: Designed to clean 14mm and 18mm spark plug threads, fitting a wide range of vehicles. Effective Cleaning: Removes dirt, carbon buildup, and metal particles, ensuring clean spark plug holes for optimal engine performance. Convenient Packaging: Comes in a blister card for easy storage and protection. Ideal for Maintenance: Essential for routine engine maintenance, helping prevent misfires and improve spark plug lifespan.