Strong magnet in the bottom for easy hands-free use Easy to use with compact size for convenient storage and transport Bubble shell made of acrylic, designed for scope leveling Shell constructed from acrylic and plastic for durability and ease of use Features a level bubble to ensure crosshairs are properly aligned for accurate placement and reliable adjustments Instructions: Place the Scope Turret Level on the top scope cap and the Action Level above the bolt; once both levels indicate a level position, tighten the rings securely Material: ABS Color: As shown in the picture Package dimensions: approximately 6 x 4 x 1.7 cm (2.36 x 1.57 x 0.67 inches) Net weight: 20 g (0.04 lbs) Please allow 1-2 cm variation due to manual measurement. The actual color may vary slightly due to monitor display differences 2 pcs/set Magnetic Gunsmith Level