Be safe and seen with the ORB Bar End safety light. This set includes two lights which easily attach to a drop bar with an inner diameter of 18.5 mm-22 mm. The alloy chassis provides longevity and a simple switch enables easy operation. The Orb features three lighting modes, constant, flashing, and rapid, and boasts a long runtime thanks to the two included CR2032 batteries. Cut-out design provides additional side visibility.