Mounting to a Picatinny or Weaver type rail, the standard 2-screw Hunter rings are a nice match for general hunting setups. Made from aircraft-grade 6061-T6 aluminum for optimum strength. Available in three heights for 1 inch tubes. Note:- We do not recommend the Hunter Rings for use on heavy recoiling rifles. Features: Center Scope Height .63 inches (16.0 mm) Weight (per ring) 44 grams (1.55 oz) Mount Compatibility Picatinny and Weaver Specifications: Base Clamp Screws 25-30 in/lbs Ring Screws 15 in/lbs Included in the Box: 2 Hunter 1-Inch Rings