View 2 of Freewell 67mm Empty Magnetic Base Ring (Works ONLY with Freewell Magnetic Quick Swap System Please Read Note)

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View 1 of Freewell 67mm Empty Magnetic Base Ring (Works ONLY with Freewell Magnetic Quick Swap System Please Read Note)View 2 of Freewell 67mm Empty Magnetic Base Ring (Works ONLY with Freewell Magnetic Quick Swap System Please Read Note)