Pixco 52-42mm Step-down Metal Adapter Ring / 52mm Lens to 43mm Accessory normally ,the shipping time is about 6~15 working days to USA.Please note:If you receive a message indicates that you will receive item(s) longer than 6~15 working days.please don't worry,it is inaccurate. Compatible with: Filters, lenses, adapters, lens hood, and ect The male thread to camera lens: 52mm The female thread to filter: 43mm