Premium and durable: this motor tool is made of carbon steel, providing high quality, strong resistance, and long lasting durability. Function: this universal motor adjustment tool locks camshafts in place while changing timing belts on most cam motors, helping to reduce repair time and minimize belt-related damage. Product advantages: includes essential locking tools, making the tool very practical and helping save money by reducing time and risk of damage during belt replacement. Wide application: designed to cover the unique double prong motors and four camshafts to keep the valves in correct alignment; fits most cars. Use scenarios: - Timing belt replacement on engines that require camshaft locking to prevent movement during the job. - Belt tensioning and alignment to ensure correct valve timing and reduce the chance of valve damage. - Auto repair shops or DIY garages to speed up belt changes and improve reliability without adding extra tools.