LBL-34 Vortex Optics Lo Pro Bubblevel 34 MM This slim, low-profile design allows the Bubblevel to be mounted on most scopes without removing the scope from the rifle. It is easily visible without losing the sight picture. Mounts quickly and easily to the riflescope tube. Made in the USA. Specifications: Weight 0.5 oz Outside Diameter (inches) 2.2 - 2.4 inches Outside Diameter (mm) 55 - 61 mm
