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Flathead screwdriver and wrench all in one, for adjusting valve lash on Isuzu 4JJ1 diesels : r/Tools
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Powerbuilt 10 Millimeter Jam Nut Valve Adjustment Tool, Slotted Valve Adjusting Stud, Honda, Nissan, Toyota, Japanese Vehicle Engines - 648827 : Automotive - Amazon.com
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