BKL 12-Way Folding Scope Level, Fits 30mm dia. Scope Tube

12-way scope bubble level Fits 30mm dia. scope tube Easy installation Eliminate cant with BKL's 12-way scope bubble level. Position the level above, below or off to the side depending on your needs. Reference the level before taking your shot, reposition your gun so it's level and then shoot. You should see a difference in accuracy, as a canted gun is not accurate. Included ring fits any 30mm scope tube.