Mookex 2 Pack 30mm Scope Bubble Level, Fit with 30mm Diameter RifleScope for Shooting and Hunting

This was smaller than I anticipated and is not really detailed in the itme description. It is not quite 1/2 scale of my Vortex Optics bubble. The bubble itself is .624(15.85mm) vs. Vortex being .984 (25mm). There are application where this could be useful such as low rings where a larger bubble and a larger base could be in the way.