This Stepping ring has a male thread of 25mm and a female thread of 30mm, use this stepping ring to put 30mm filters and other applications onto a 25mm diameter lens.\n\nShipping\n\nUK Shipping:\n\nOur default method of sending mail to all areas of the UK\nis by Royal Mail 48 service. We also offer Royal Mail 24, Special delivery\n& tracked services. Bulkier Items are usually sent by courier\n\n \n\nInternational Shipping:\n\nOur default method of sending International Mail. Is by\nInternational Standard Airmail, using the Royal Mail. This is NOT tracked.\nPlease be aware eBay?s delivery estimates are only estimates it can take\nlonger. For a faster service please consider our tracked service\n\n \n\nWe do offer a tracked service through the Royal Mail, which\nis a little more expensive, but usually with quicker delivery times