The ToolPRO Overhead Valve Spring Compressor Kit is a versatile tool designed for the removal and installation of valve springs on overhead valve engines. With its universal design, this kit can be mounted to existing fastener holes and used with the head installed or removed from the vehicle, providing convenience and flexibility. The adjustable lever pivot mechanism of the compressor ensures ease of use, allowing for efficient and precise operation during valve spring tasks. No more struggling with manual compression methods - this compressor makes the job a breeze. The kit also includes an air fitting adaptor tube with multiple adaptors to suit different spark plug threads. This feature enables the engine cylinders to be filled with compressed air, preventing the valves from dropping while removing the valve springs. It's a valuable addition that ensures safety and efficiency in the process. For professional mechanics and DIY enthusiasts alike, the ToolPRO Overhead Valve Spring Compressor Kit is an essential tool that guarantees reliable and hassle-free valve spring maintenance on overhead valve engines.