SPECIFICATIONS   Brand Name: NONE Choice: yes High-concerned chemical: None Model Number: 11z Origin: Mainland China Type: Rifle   Features: 1. Constructed by aluminum alloy. Anti-oxidation, solid, lightweight and durable. 2. Easy to install: can install it on a 9.5mm-10 mm dovetail rail with the allen wrench attached. 3. Innovative Rail Platform to Convert 20mm rail. 4. Top 20mm Picatinny width rail suitable for attaching a flashlight, dot site, scope etc. to your equipments. 5. Rough surface provides additional safety installation. Pacakge includes: 2* Adapter Mount