Off by a degree, miss by a mile. The Vortex Optics Pro Leveling Kit ensures your riflescope reticle alignment is always perfectly true- a crucial factor for precise elevation and drop adjustments at long range. Foolproof and straightforward, this essential tool simplifies setup and eliminates guesswork, providing peace-of-mind by eliminating variables that lead to missed targets and once-in-a-lifetime shots on game. Clips to any Picatinny rail. FeaturesClips to Any Picatinny RailEasy, One Handed Operation