Installing valve springs has never been easier. With the help of this valve spring compressor tool, it only takes a matter of seconds to install the valves spring assembly in your vehicle. Simply align the holes on the aluminum body of the valve spring compressor with the ones on the head, bolt it using the provided short bolts, place the valve spring, retainer and retainer cap on the retainers, bolt down the long bolt, place the keepers using the magnetized screwdriver, and voila! It's done. Our valve spring compressor was specifically designed for VTEC heads and thus will fit flawlessly without any modifications. CNC machined 6061 anodized aluminum Can be used with the head on the block Will not slip and scratch or damage your head like universal clamp type valve spring compressors No need to remove the rocker arm shafts Included is a small magnetized screw driver to very easily remove or install the keeper Made in the United States We at Euroexport have been making our valve spring compressors for Honda for almost a decade. They are machined, anodized, and laser engraved in the United States.