With the help of this valve spring compressor tool, it only takes a matter of seconds to install the valve spring assembly in your vehicle. It can be used with the head on the block, no need to remove the rocker arm shafts. The valve spring compressor is specifically designed for VTEC heads and fits flawlessly without any modifications. It will not slip, scratch, or damage your cylinder head like universal clamp-type valve spring compressors. Compatible with Honda Acura B16 B18 H22 VTEC engines. Specifications: Condition: New Material: Aluminum Alloy Valve Length: Approx 12cm / 4.7in Package Weight: Approx 332g Fitment: For Honda Acura B16 B18 H22 VTEC Package List: 1 x Valve Spring Compressor Tool Kit Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated the same, item color displayed in photos may vary slightly from the real object. Please take the actual item as standard.