This Manley Valve Spring Compressor tool takes all the hassle out of changing valve springs with the heads on a HEMI engine. The handle provides excellent leverage for compressing almost any spring and its black oxide finish will last a lifetime. An air holding plug to keep valves from falling into cylinder is required. Works with any Chrysler or Ford with Shaft Mounted Rockers. Cheap but effective. If you're going to be doing more than one job, we strongly suggest going with a professional tool like part# SAHVST
