PRO LEVELING KIT TAKES THE CANT OUT OF LONG RANGE PRECISION. Off by a degree, miss by a mile. The 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. Features Easy, One-handed Operation Dual Levels Ensure Accuracy Clips To Any Picatinny Rail 6061 Aluminum - Durable And Lightweight Included in Mfg: Vortex Optics