Description 1.Fits most Weaver and Picatinny Rails 2.Accepts most scopes and red dots that have a 25.4mm&30mm tube diameter 3.Quick detach lever lock 4.Provides steady and solid mount Fit：20mm Rail Ring Dia：25.4mm&30mm Rail size：20mm Material：High Quality 6061 Aluminum Package list: 2x Mount 2x Allen Key Shipping terms Country Shipping time Shipping way USA 7-14 days By USPS with tracking number free Australia,Canada,United Kingdom 25-30 days By air mail France 30-40 days By air mail Brazil,Russia and other countries 40 days even longer By air mail If you want your parcel with a tracking number, please contact with me before you pay, thanks. How to contact us I always reply your message within 24 hours, so please feel free to send me message anytime and wait for my reply for you I think any problems can be friendly solved ,so if meet any questions or problem, contact with me firstly, don’t forget this, thanks. Feedback After your pay, you will get a positive feedback from me very soon! As long as you meet problem with the deal, before you leave me feedback, give me a chance to solve the problem for you, thanks. After-sale service if you can't get your parcel after a very long time and you are worrying about the parcel, please send me message firstly and i can ask my post office to check it for you, i think any problem can be well resolved if you and me work together, thanks. if you get the parcel, but when you open the parcel and find the item not working for you, please send me message at once, i will try my best to resolve it for you, if damage in the mail, just send back to me for exchange, thanks.