Vortex Low Pro 34mm Bubble Level

VORTEX LOW PRO RIFLESCOPE BUBBLE LEVEL FOR 34 MM TUBE Model LBL-34 The Vortex bubble level helps for the most precise long-range shooting. You can easily see the bubble level while on the rifle to ensure that the rifle is perfectly vertical. This will eliminate potential error caused by shooting a canted rifle. This comes into play increasingly as distances get further. The unit mounts quickly and easily to the riflescope tube without any specialty tools.This slim, low-profile design allows it to be mounted on most scopes without removing the scope from the rifle. 0.5 oz  Weight 8 in lb Torque for fastener Vortex Lifetime Warranty LBL34 Made in USA