Step-down ring that converts from 52mm to 49mm. - Brand: XCSOURCE - Model: Step-down ring 52mm to 49mm - Size: 52mm to 49mm Thank you for viewing. Unopened and unused. We also have many other camera-related equipment for sale, so please take a look. If you have any questions, please feel free to ask. → You can see them from #torochang camera equipment. #camera #filter #NDfilter #lensaccessories #photographingequipment #Canon #Nikon #Sony #mirrorless #slr #landscapephotography #longexposure