COMP Cams LS Valve Spring removal tool is engineered specifically to work with all GM LS-Type engines. The easy-to-use custom design enables the removal of 1 or 2 valve springs at a time without the hassle of removing the rocker stand or any of the other installed rockers. The tool works both with the cylinder heads installed on an engine or off. This simple design facilitates easy usage in vehicles where other tools are incapable of reaching the tight spaces. This tool is a “must have” for all LS engine builders and enthusiasts.