This lever-action compressor from Beta Tools makes quick work of dismantling and assembling cylinder heads. Jaws on one end of the tool cup the valve spring retainer, while a swiveling plunger screw holds the valve closed. Simply adjust the plunger until it contacts the valve face and pull down on the lever. The valve spring will compress far enough to let you remove or install the valve keepers. Includes one set of straight jaws and one set of offset jaws (for applications where the rim of the cylinder head is higher than the valve spring).
Reach (from side of cylinder head to valve): 180mm (7")
Jaw opening range (valve face to top of retainer): 45 - 225mm (1 3/4" - 8 7/8")