The steps are simple & easy to select and install. 1. Select your scope tube size. 2. Choose your scope ring style. 3. Install. Each set comes with a variety of height solutions and is adaptable to Weaver and Picatinny rails.Features:Heights Included: Low, Medium, High, Extra High;Scope Tube Size: 1?;Four-Way Locking System;Shock Dampening System;Fits Weaver or Piccatiny;7/64 Hex;6061-T6 Aircraft Aluminum