General description 1/2" Drive fuel tank sender locking ring tool designed specifically for Vauxhall, Opel, and Saab vehicles. This tool is essential for safely removing and installing fuel tank sender locking rings. Technical specifications Drive size: 1/2" OEM equivalent: KM-797 Compatibility and accessories Vauxhall/Opel Applications: Astra G (1998-2012), Astra-H (2004-2012), Zafira-A (1998-2012), Zafira-B (2005-2012), Corsa-C (2001-2012), Vectra-C (2002-2012), Signum (2003-2012), Tigra-B (2004-2012) Saab Applications: 9-3 (2003-2011) Engine codes: B207, B284, D223L, Z19DT, Z19DTH, Z19DTR