1. Professional Scope Leveling Kit: Includes 1 scope level for clamp mounting, 2 reference levels for placement on your rail or scope turret caps to aid precise adjustments, and 1 Allen key for kit adjustment. Designed for scope leveling and precision. 2. Higher Accuracy: Features an upgraded calibration distance of 10 mm and a clear scale for more accurate and effective bubble measurement, helping reduce adjustment errors. Each scope level is quality-checked before shipment. 3. Adjustable & Magnetic: Equipped with adjustable knobs for secure attachment to equipment up to 1.97 inches in diameter. Reference levels feature strong magnetic bases for stable, reliable placement. 4. Aluminum Construction & Protective Padding: Made from durable aluminum alloy for long-lasting performance and smooth handling. Includes soft rubber padding to help prevent scratches on sensitive equipment.