1. Multiple Compatibility Works with 10 mm, 12 mm, 14 mm, and 16 mm spark plugs. Prevents damage to spark plugs with 18mm thread and long reach. Please check the plug size for a fit. 2. Durable Material: Our spark plug gap tool is made of sturdy and longlasting materials, ensuring reliable and safe performance during spark plug installation and maintenance. The robust and wearresistant design guarantees lasting durability for all types of engines. 3. Efficient Maintenance: With its advanced design and precise measurements, this spark plug gap tool speeds up the installation process and optimizes engine performance. An essential automotive tool that maximizes efficiency and minimizes downtime. 4. TravelFriendly Design Ensure your engine's performance with this compact and portable spark plug gap tool. The comfortable, easytogrip design takes up minimal space, making it the ideal gauge for professionals and DIY enthusiasts.