Plews 70-785 Aluminum Cap Style Filter Wrench Multi-flute stepped design that allows the cap wrench to fit most auto and light truck applications High quality cast aluminum construction Use with 3/8 inch square drive 7/8 inch or 1 inch open/combination wrench Compact design fits in places most other wrenches cannot Large; 93 millimeters diameter filters with 15 or 36 flutes found on many GM Ford and Chrysler vehicles