uxcell 10 x 29-40mm Spring Car Interior Dome Festoon Bulb Base Light Adapter Product Name : Spring Dome Festoon Bulb Base ;Voltage : DC 12V External Material : Plastic, Metal;Main Color : Black, Silver Tone, Red Fit Bulb Size : 29mm-40mm;Cable Length : 50mm/2" Weight : 23g Package Content : 10 x Spring Dome Festoon Bulb Base