Check the listing for details. Low profile 1/2 inch Riser Base Mount Picatinny Weaver Rail Scope Mount 14 Slots. Condition: New. Listed at 10.89 USD. Product Description Description: Material: Aluminum Alloy Length: Approx. 145mm (Approx 5.71inch) Height: 18mm (Approx 0.71inch) Rail Width: 20mm (Approx 0.79inch) Base width: 20mm (Approx 0.79inch) Features: Quick Detachable Design allow instant attach & detach action. Full Metal Construction. See Through design allows the users to see the iron sights when mounted. Length: Approx. 145mm (Approx 5.71inch). Height: 18mm (Approx 0.71inch). Rail Width: 20mm (Approx 0.79inch), Base width: 20mm (Approx 0.79inch). Package: 1x Mount Lifetime After-sales Services: We provide Lifetime After-sales Services. If the product you received has any defects or is not satisfied. You can choose to replace it with a brand new knife or request a full refund. If you have any other questions, please feel free to contact us.