These do look nice and do not extend too far to the sides, but they are called marker lights probably because they are not DOT approved. They come with small dome 23 watt bulbs which may not work with older (non-electronic) flasher relays like my bike has. Unlike another reviewer, I doubt that an 1156 bulb would fit unless the socket were removed and the leads soldered directly to the bulb. Also, while the outer housing is very reflective, the inner part is not and while lit, most of the light appears on the outer 40% of the already small lens. For those who are still interested, they come with a 10 mm thread and may benefit from a rubber mount of some kind because there is none built in. Don't know how vibration resistant these bulbs are.