8Pcs 42mm 3528 8 SMD Warm White Car Festoon Dome Light Lamp Internal Size: 42mm(1.72"),Type: 3528 8 SMD,160 Lumen Color: Warm White,2833-3200k (with 180 degree light output) Only for DC 12V vehicles The 42mm(1.72") Light LED Bulbs FIT 211-2 212-2 569 578 etc. Notice:All LED bulbs have to be plugged in a certain way,it has Positive and negative, so if they don't work at first, quickly take them out, turn them around 180 degree, and put them back in again.