Product Feature: * Application: 66784 valve spring compressor tool universally fits for removing and Installing valve coil springs for all 3/8 and 7/16 thread engine valves rockers. Available to switch between 3/8 or 7/16 thread stud head by adjusting a c-clip. * Function: Pay for an efficient valve spring compressor tool, which means ensuring you finish your job faster while decreasing the risk of damaging parts. Ideal tool for those who want to speed up the valve spring replacement process. .
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