Material and construction - Chromium-vanadium steel built and heat treated for high hardness and toughness, delivering durability that stands up to intensive use Finish and appearance - Rust-resistant dark finish technology provides corrosion resistance and a professional look, even in wet conditions, helping it stay functional longer Grip design - Ergonomic, fatigue-reducing grip for sustained work efficiency - Unique flower-patterned locking grip offers a comfortable hold and easy operation Puller feet - Thickened puller feet produced via a one-piece molding process and high-temperature heat treatment for strong, durable performance - Reinforced feet simplify installing or removing the valve spring, promoting smooth operation and precise performance over long use Applications and scenarios - Automotive valve maintenance: suitable for installing and removing valve springs during engine service - Industrial workshops: reliable in damp or humid environments where corrosion resistance and durability are important - Field repairs: provides stable control and longevity for valve-related tasks in varying conditions