Engineered for durability and high visibility. Universal overhead mounting options for 1-1/2" - 2" round tubes or flat drillable surfaces. Easy to adjust double ball-joint pivot-arm. Clamp design allows for mounting with roof installed. Accommodates mounting to 1-1/2" - 2" round tubing and flat surfaces. Wide angle convex lens provides high visibility. Durable, shatterproof, scratch-resistant safety acrylic mirror lens. Dimensions: 10" x 3". Sold individually.