【Applicable】: Valve spring compressor is for 2 Valve 4.6L 5.4L V8, 6.8L V10, not compatible any other 3V or 4V engines.
【Valve Spring Compressor Tool】: No need to remove the cylinder head to compress the valves; the arm compressor allows for quick and easy removal and replacement of valve spring, roller followers, rocker arms and lash adjusters.
【Easy To Use】: Valve spring removal tool is designed to be easily used with 3/8 inch breaker bars or ratchet service camshafts, valve seals, valve spring and retainers, and can be used with the engine removed or installed, with the cylinder head open or closed.
【Accurate Adjustment】: Valve spring seal retainer is opening can be adjusted to ensure a tight fit on your camshaft.
【Premium Material】: Valve compressor tool is made of quality carbon steel, which is strong and can be used for a long time.
Please allow slightly errors 1-2cm differences due to manual measurement.