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[lens cap]
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■ Adapter ring 72mm "B" and "C" 2 piece set that can be magnetized by attaching to your lens filter. ■ Attach the "C" to the lens and attach the "B" to the filter, making it easy to attach and remove the force of the magnet, making filtering work easier. ■ Can be used when lens and filter are 72mm. ■ "B" and "C" stick strong enough, so you can rest assured that the filter will not fall off under normal use. However, when attaching the "C" to the lens, it will not stick physically if too much screwed, and the magnetic force will weaken, so be careful not to screw too much. ■ "C" requires the included hardware for installation. The "A" (sold separately) does not require any tools, so please choose the one you like.