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 the open turret caps of your scope to enable precise adjustments, and 1 Allen key for adjusting the scope leveling kit. Everything needed for accurate scope leveling and alignment. 2. Higher Accuracy: The improved calibration distance of the scope leveling kit is 10mm, featuring a clear scale that allows for more accurate and effective bubble measurement, helping to reduce alignment errors. All scope levels are individually inspected before shipment. 3. Adjustable & Magnetic: The scope level features adjustable knobs for easy attachment to equipment, fitting barrels up to 1.97 inches in diameter. The reference levels include a strong magnetic base for secure and stable positioning. 4. Aluminum & Protective Silicone: Constructed from durable aluminum alloy for long-lasting performance and a smooth finish. The kit includes soft rubber padding inside to help protect your equipment from scratches during use.