TRIROCK 25.4mm 30mm Dual Scope Rings Mount Cantilever with Angle Cosine Indicator & Bubble Level fits 21mm Picatinny weaver Rail

• Precision machined from 6061-T6 Aluminum and finished with Hard Coat Anodizing for maximum durability, that offers secure mounting for the most standard size scopes. It also provides the corrcect height and forward placement nacessary for proper scope mounting on various rifle platforms.
• Internal Diameter is 30mm and includes bushings to reduce the internal diameter to 25.4mm(1"), that the Integral ring mounts will fit most scopes with a 30mm/1" tube diameter freely.
• Angle Degree/Cosine Indicator takes the guesswork out of uphill and downhill shots. The red needle moves with your rifle and displays a number that indicates the percent your rifle is off level. The built-in Bubble Level would help to remove cant, identify the terrain slope, improve long range accuracy , and ensure the rifle to be perfectly vertical.
• Its 21mm width rail base mount will fit most any standard Picatinny/Weaver style rail and scope mount. The additional rail in the package would help to mount with when necessary.
• Easy and quick install and removal. Hexagon Shape mounting nut, with holes for torquing with Allan key wrench. The mount base with full adjustability to fit on standard 21mm Weaver Picatinny Rails.

Features with Angle Cosine Indicator Kit,Bubble Leve Finished by :Black Matte anodized Material: 6061-T6 Aluminum Fits Rail Width : 0.83 inch (21mm) Diameter: inside 1inch(25.4mm) + outer ring 1.18inch(30mm) Distance between the dual rings: 62mm Package Includes: One set of Scope dual rings mount One piece of Wrench One piece of picatinny rail