They don't make this tool any more! It's been replaced by this one:
http://www.amazon.com/Lisle-48300-Pu...dp/B00DBMLY8G/
http://www.lislecorp.com/divisions/p...s/?product=632
Lisle 48300 Push Rod Remover
Redesigned for Newer 3.5L and 3.6L GM Engines. Also Works on GM V6 2.8L, 3.1L and 3.4L.
Quickly removes push rods so you can replace the intake gasket. No need to loosen and retighten the rocker arm. The tool pivots the rocker arm to compress the valve spring and free the push rod for removal.