Nilight 4-Pack LED Off-Road Light Vertical Bar Clamp Mounting Kit. It can be used on tubes of 1″, 1-1/2″, 1-3/4″ & 2″ in diameter and applied to LED light bars for almost all kinds of vehicles. It comes with non-slip rubber inserts in a wider range of sizes; helps dampen vibrations and protects your bull bar from being scraped.