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