1. Professional Scope Leveling Kit: This scope mounting kit includes 1 scope level for securing the clamp, 2 reference levels for placement on your rail or scope’s open turret caps to assist in precise alignment, and 1 Allen key for adjusting the kit. Everything needed for accurate scope leveling. 2. Higher Accuracy: The improved calibration distance of this scope leveling kit is 10mm, featuring a clear scale that allows for more precise bubble measurement, enhancing accuracy and reducing setup errors. All levels are individually inspected before shipment. 3. Adjustable & Magnetic: The scope level features adjustable knobs that allow secure attachment to equipment with diameters up to 1.97 inches. The reference levels include strong magnetic bases for stable and reliable positioning on metal surfaces. 4. Aluminum & Protective Silicone: Constructed from durable aluminum alloy for long-lasting performance and a smooth finish. The interior includes a soft rubber padding that helps protect your equipment from scratches during use.