Dimension: Dove Rail Length 68Mm, Top Picatinny Rail Width 20Mm, Bottom Width 11Mm, Height: 2Cm (Bottom From Base To Rail) Material: Made Of High Durability Aluminum Alloy In Matte Black. Durable, Impact And Corrosion Resistant. Rail Adapter: Specially Designed To Convert An 11Mm Rail Base To A 20Mm Rail Base. Ideal For 11Mm Base And 20Mm Weaver/Picatinny Mount Accessories. Riser Design: The Mount Allows The Height Of The Flattop To Be Increased For Easy Aiming. Help You Lock The Target Easier. Multiple Rails: The Top Weave Rail Of The Adapter Can Be Separated For The Riser, Dovetail Rails On Both Sides For Installing Additional Items . Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it