78935 Universal Fuel Tank Lock Wrench Astro Pneumatic 78935 Universal Fuel Tank Lock Wrench Astro Pneumatic is needed to remove fuel tank locking rings on fuel senders for many 2004 and newer vehicles. 78935 Universal Fuel Tank Lock Wrench Astro Pneumatic applications include GM, Chrysler, Dodge, Ford, BMW, Hyundai, Jaguar, Mercedes, Nissan, Subaru, Saab, Volvo and more. 78935 Universal Fuel Tank Lock Wrench Astro Pneumatic is 7” in size and features a 1/2” square drive for use with a ratchet or breaker bar.