Our newest line EV3 is now available! These 2 1/16" gauges are built in our factory in the US with multi-colored LED's and a blue tooth chip for easy customizations and programming via our free EV3 Attribute programming app (available for free download at Google Play and Apple App store) This rear axle temperature gauge is 2 1/16" in diameter, with a black face, white pointer, and black bezel during the day and white backlighting at night unless you have customized the back lighting and pointer color via the app. The gauge kit is sold with everything needed for installation, including wiring harnesses, sensor, and bracket.