Mounting hole diameter 0.3 inch (8.3 mm) set of 2 universal mini turn signals. It can be installed if you have M8 or M6 screw diameters, such as mirrors or switches around the handle. The unique mounting and compact design allows you to expand your custom width when you dont want your turn signals to stand out or have no extra space in your space! Flashing is a sequential type that flows in 3 stages. Matte black metal body and smoke lens make it not presence when not lit. The sleek design makes it easy to match with a variety of American and street fighters. (Ultra Small Design) It is very compact with a width of 2.4 inches (60 mm), height of 0.5 inches (12 mm), depth of 0.7 inches (18 mm), so you can attach it to any location with the mounting screws. While it is compact, the inside of the lens is cut to diffuse the LED light efficiently, providing enough brightness and visibility. [Product Details] Compatible with 12V vehicles only; Size: Width: 2.4 inches (60 mm), Height: 0.5 inches (12 mm), Depth: 0.7 inches (18 mm), Mounting Hole Diameter: 0.3 inches (8.3 mm), Wire Length: 17.7 inches (450 mm); Wiring: 2 pieces: Black to negative, red or yellow; English language not guaranteed). Because it is an LED turn signal, please install a resistor or or IC turn signal relay to prevent high flora when changing from halogen bulbs.