Mini 3-1 taillight, brake, turn signal combo with a 'blend-in' design that will style-merge with virtually any bike. Equipped with an ECE approved lens with High-Intensity red and amber LEDs. The billet aluminum housing measures 1" (25.4mm) wide x 1/2" (12.7mm) high. The stem is 14mm stem long. The threaded portion of the stem has 8mm threads and is 18.3mm long.