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CASIO fx-50FH II Scientific Calculator Battery Replacement

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  • 1 × Phillips head screwdriver Size PH00
  • 1 × Spudger
  • 2 × Cotton Swabs
  • 1 × Nitrile Disposable Gloves
  • 1 × Distilled White Vinegar
  • 1 × LR44 (A-76) Batteries
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