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To avoid scratches, never wipe the lenses when they are dry (there may be dust or particles).
Always use a microfiber cloth. Never use paper towels or other rough materials.
Check your Fast Metal Speed Demon, Pioneer, or Shifter protective eyewear regularly to make
sure the screws are tight. If you find one that is loose, tighten it gently with a small optical
screwdriver. A 2.0mm screwdriver is recommended. Also, if your hinges are binding, use a
little oil on the barrels to free them.
