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;Scope Tube Size: 1?;Level Indicator Attachment;Male/Male Piccatiny Attachment;Shock Dampening System;Fits Weaver or Piccatiny;Material: 6061-T6 Aricraft Aluminum;Matte Black