This lens replaces the standard lens on the Cannon. It provides a ring of light horizontally rather than the standard lens which gives more of a vertical cone of light. It's useful when replacing a halogen turn/brake light bulb with a Cannon as it allows the entire factory brake/turn lens to fill with light. Only the Cannons with the newer style red O-ring have an interchangeable lens. The older style Cannons are not able to be upgraded to the 360 lens.
FITS GEN2 Cannons only. Gen2 Cannons have an inline driver. Gen3 Cannons have no in-line driver.