Fast installation and time saving This valve spring compressor tool installs valve spring assemblies in seconds, reducing effort during vehicle maintenance. Its efficient design provides a smooth, reliable installation for both hobbyists and professional mechanics. Perfect fit for VTEC heads Specifically designed for VTEC heads, this compressor fits perfectly without modification. The precise design ensures compatibility with B16, B18, and H22 VTEC engines for a seamless service experience. No need to remove retaining hardware Unlike other compressors, this tool can be used with the head on the block, eliminating the need to remove circlips or retainers. This simplifies the workflow and reduces the risk of damage to engine components. Durable and safe Made from high quality aluminum alloy for long life. Unlike universal clamp-type compressors, it does not damage the cylinder head, ensuring safe and reliable operation. Use scenarios - Replacing valve springs on a B16 or B18 VTEC head during routine maintenance or performance upgrades. - Servicing an H22 VTEC engine without removing the head, during valve train service or inspection. - In-shop valve spring installation on engines either in the vehicle or on a stand, enabling efficient work with reduced risk.