Key benefits - Broad compatibility: suitable for a variety of OHV/OHC/CVH engines. Not recommended for engines with low valves. - Fast, repeatable setup: switchable jaw adapter and automatic cam locking provide a pre-set setting for quick, consistent operation. - Flexible depth for many springs: depth of the tool to the holder is adjustable, accommodating most large and small spring applications. - Efficient valve spring and holder removal: by squeezing the valve spring holder to expose the valve holder, you can remove holders, relax the tool, and remove the spring with ease. What it does - Facilitates removal of valve springs and spring holders with a focused, controlled action. - Keeps the holding and locking mechanism in a pre-set position for reliability during use. Key features - Switchable jaw adapter for versatile gripping on different valve springs. - Automatic cam locking ensures the tool stays at the preset setting during operation. - Adjustable depth to fit a wide range of spring sizes, from large to small. Compatible applications and scenarios - Valve spring replacement during cylinder head service on OHV/OHC/CVH engines. - Servicing engines with varying valve spring sizes, including both large and small springs. - Automotive repair shop use where a single tool handles multiple engine types without reconfiguration. Notes - Not suitable for engines with low valves. This tool is designed to deliver controlled, repeatable performance across compatible engine types.