Feature X-ACCU 34mm Adjustable Elevation Weaver Scope Rings (XASR-3451) A Adjustable Elevation Height from 34.0 to 40.0 mm (1.34-1.57") Enables Precise Bullet Drop Compensation A Optimized Ring Profile Accommodates 34 mm Tube Optics w/ Balanced Mounting and Refined Alignment A CNC-Machined 6061-T6 Aluminum Construction Delivers Accurate Scope Positioning and Durability A XMOD (XAccu Modular Interface) Supports Red Dot Plates, Picatinny Rails, and Modular Accessory Integration Specification X-ACCU 34mm Adjustable Elevation Weaver Scope Rings (XASR-3451) Specification Details Ring Dia: 34 mm / 1.34 in Height: 59 mm / 2.32 in (Default) Central Height: 34.0-40.0 mm / 1.34-1.57 in (Bottom to Center) Length: 26 mm / 1.02 in Material: 6061-T6 Aluminum Alloy Weight: 82.5 g / 2.91 oz Mount: Weaver Finish: Black Matte Items in the Package: 2.0mm Hex Key, T15 Torx Key, etc. Size Video