J.W. Speaker’s 8700 Evolution 7-inch-round lights are also made in the U.S.A and are DOT-compliant. The Evolution lights, which replace the previous 8700-series, are now fitted with UV-resistant polycarbonate lenses and a shallower design, making it an easier fit in applications where mounting depth is an issue. Like the Truck-Lite Phase 7s, the Evolutions also use a die-cast aluminum body, rugged solid-state electronics, and are compatible with both 12-volt and 24-volt systems. Our test lights came in a Bold Black finish, but the Evolutions are also available in Muscle Chrome. J.W. Speaker backs these lights with a four-year limited warranty.