Fast, smooth friction drive vertical adjustments. 100% machined aluminum construction. Premium stainless steel hardware. Micro-click windage adjustments. Micro elevation adjustments for customized base yardage. Laser engraved tool-free windage and elevation adjustments. 2nd axis adjustment. Ultra bright fiber optics. Rheostat sight light. Threaded housing accepts optional 1.75" lens (not included). Fine-point needle indicator on both sides of sight tape. 10 custom sight tapes included..