- The 10-piece overhead valve spring compressor tool set is designed for safely compressing valve springs during the removal and installation of cylinder heads in most cars, motorcycles, and small engines. - Versatile Application: This valve spring compressor tool kit is compatible with a wide range of vehicles, including cars, vans, SUVs, UTVs, and motorcycle engines. It's suitable for both professional mechanics and DIY enthusiasts. - Comprehensive Service Kit: The automatic valve spring compressor kit includes a robust C-clamp, three extension rods (lengths: 3", 4.4", and 4.4"), five collet adapters (sizes: 16mm, 19mm, 23mm, 25mm, and 30mm), and a 4-inch hand lever. Each collet has a length of 1.75 inches and a maximum jaw opening of 9.5 inches, ensuring a secure grip and ease of use. - Premium Quality Construction: Crafted from high-quality metal with a black oxide finish, this valve spring tool is built to last. It offers excellent durability, rust resistance, and corrosion resistance, ensuring reliable performance over time. Use scenarios: 1. Perfect for automotive repair shops performing routine maintenance or engine rebuilds, allowing quick and efficient valve spring replacement. 2. Ideal for home mechanics tackling engine projects, providing the right tools to easily manage valve spring compression without hassle. 3. Suitable for motorcycle enthusiasts looking to upgrade or service their bike’s engine, ensuring professional-grade results.