CNC-Non-Slip Design
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The frame made by aviation aluminum, lightweight but construct enough , the CNC- technique helps remove and install the filter easily.
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Double Sides 28 Multi-Layer Coatings
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Both sides of the glass with nanometer coatings, waterproof and scratch resistant, double side polishing technology , no affect for the image quality.
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Up & Down Lens Cap Protect
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With up & down lens cap with two functions, one can protect the filter , another is to protect the lens( Support screw on the lens directly).
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