Features:\nWith strong magnet at the bottom for easy hands-free use.\nEasy to use and compact size for convenient storage and transportation.\nThe shell bubble is made of acrylic, designed for scope/rifle leveling Compact: The shell is made of acrylic and plastic, easy to use and compact size for convenient storage.\nAccuracy: With spirit level to ensure the crosshair is aligned for line placement and reliable doping adjustments.\nHow to use: Place the sight tower spirit level on the upper sight cap and the action spirit level above the bolt; when the levels show a flat sight, tighten the rings.\nSpecifications:\nMaterial: ABS\nColor: As the picture shows\nPackage dimension: approx. 6x4x1.7cm/2.36x1.57x0.67inch\nNet Weight: 20g/0.04lbs\nNote:\nPlease allow 1-2cm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.\nPackage includes:\n2pcs/set Magnetic Gunsmith Spirit Level