Saab Rigid Valve Spring Compressor

This on-the-car rigid valve spring compressor was designed to do away with comventionallever based or C-clamp type compressor mechanisms. The side-by-side threaded compressors unique and inherent design allows the technician to:
1)have two free hands to work with at all times
2)safely and easily maintain the valve spring in a fully compressed position
3)repair valve stem seals w/o removing the heads
4)cut factory allotted repait time
5)work on all double overhead cam Saab engines ever produced (900, 9000, 9-3, 9-5, etc.) from the earlist to the most recent.