For the most precise long-range shooting, use the Vortex Optics Riflescope Bubble Level to ensure that the rifle is perfectly vertical. This will eliminate potential error caused by shooting a canted rifle. It mounts quickly and easily to the riflescope tube.

• Provides precise long-range shooting
• Ensures rifle is perfectly vertical
• Eliminates potential error caused by shooting a canted rifle
• Mounts quickly and easily to riflescope tube
• Outside Diameter: 2.2" to 2.4" (55 to 61 mm)
• Weight: 6.7 oz.